Looking for a reliable plastic injection molding partner in the U.S.? This list spotlights 30 top companies—ranging from rapid prototyping shops to full-service manufacturers—trusted across industries like automotive, medical, consumer goods, and electronics.
Most of them are based in manufacturing hubs such as California, Texas, Ohio, Michigan, Illinois, and Pennsylvania. Whether you’re sourcing custom parts or benchmarking suppliers, this guide helps you identify proven U.S. molding providers.
| S/N | Company Name | Location | Year Established | Core Capabilities |
| 1 | The Rodon Group | Pennsylvania | 1956 | High-volume molding, Tooling, Contract Manufacturing |
| 2 | TDL Mould | California / China | 1995 | Custom molds, Precision parts, Tooling |
| 3 | Xometry | Maryland | 2013 | On-demand molding, Prototyping, CNC machining |
| 4 | Berry Global | Indiana | 2015 | OEM plastic parts, Packaging, Mold manufacturing |
| 5 | Proto Labs | Minnesota | 1999 | Rapid tooling, Low-volume injection molding |
| 6 | Jabil | Michigan | 1966 | Plastic parts for healthcare, electronics, automotive |
| 7 | Plastikon | California | 1984 | Medical molding, Design & tooling |
| 8 | EVCO Plastics | Wisconsin | 1964 | End-to-end injection molding, Assembly |
| 9 | Plastic Components | Florida | 1969 | PVC molding, Certified exterior-grade trims |
| 10 | Four Process Ltd | Missouri | 1974 | Precision molding, Insert molding, Assembly |
| 11 | LTM Plastics | Colorado | 1977 | Custom molding, Mid-volume production, QRM |
| 12 | GSH Industries | Ohio | 1986 | Injection molding, Plastic and rubber extrusions |
| 13 | Aptyx | Arizona | 1949 | Plastic molding, Coatings, Cleanroom assembly |
| 14 | Maryland Plastic Products | Maryland | 1939 | Custom molded plastics, Electronic packaging |
| 15 | Accurate Products | Illinois | 1960 | Plastic & rubber molding, Tooling |
| 16 | Pioneer Plastics | Kentucky | 1985 | Custom plastic parts, Tool building |
| 17 | Texas Injection Molding | Texas | 2013 | Custom molding, Engineering, Blow molding |
| 18 | MME Group Inc | Minnesota | 1974 | Tooling, Medical molding, Assembly |
| 19 | ADM and API | Pennsylvania | 1995 | Precision machining, Aerospace & medical molding |
| 20 | Valencia Plastics | California | 2000 | Blow molding, Injection molding, Full service |
| 21 | Ken Mold | Kentucky | 1994 | Tooling, Cleanroom molding, Automotive & medical |
| 22 | Steven Plastics Inc. | Illinois | 1989 | Custom injection molding, Mold making |
| 23 | Somerset Plastics | Connecticut | 1981 | Thermoset/thermoplastic molding, Prototyping |
| 24 | Nylacarb Corporation | Florida | 1988 | Injection molding, Insert molding, Decorating |
| 25 | PTI Tech | New Jersey | 1987 | Polymer & metal injection molding, R&D |
| 26 | VEM Tooling | California | 1998 | Tooling, Multi-cavity molding, Automotive/Aerospace |
| 27 | Nubs Plastics Inc | California | 1997 | Precision molding, Design support, QC |
| 28 | Xcentric Mold & Engineering | Michigan | 1998 | Rapid molding, Prototype tooling, Mold making |
| 29 | Crescent Industries | Pennsylvania | 1997 | Custom molding, Tooling, Assembly |
| 30 | Ironwood Plastics Inc. | Michigan | 1979 | Insert molding, Custom engineered plastics |
1. The Rodon Group
Rodon Group stands out in the realm of plastic injection molding manufacturers, boasting extensive expertise and a flair for mass production. From offering design support to mold manufacturing and assembly, they cater to a diverse clientele across various industries, covering a wide spectrum.
Dedicating their services to high-volume precision manufacturing and custom plastic injection molding, Rodon Group has served industries ranging from windows, doors, and household appliances to consumer goods, healthcare products, and construction materials. Committed to quality, innovation, and sustainability, this ISO-certified company, despite its family-owned roots since 1956, has grown to become one of the largest injection molders in the United States.
Key advantages: plastic injection molding, plastic mold and tooling building, contract manufacturing
Address: 2800 Sterling Drive, Hatfield, PA 19440
Website: www.rodongroup.com/
Contact: 1-800-523-8792
Founded: 1956
2. TDL Mould
Founded in 1995, TDL Mould is a precision injection molding company with dual operations in China and the United States, serving OEMs and product developers across automotive, medical, electronics, and industrial sectors. The company offers end-to-end solutions—from DFM support and mold design to tooling fabrication and plastic part production.
With over 25 years of experience, TDL specializes in high-tolerance molds, multi-cavity tools, and engineering-grade materials. Its Dongguan facility houses over 60 employees, including 15+ senior mold designers, and is equipped with advanced CNC, EDM, and precision measurement systems.
What sets TDL apart is its ability to combine competitive offshore pricing with Western-standard quality and responsiveness. The company adheres to ISO 9001 standards and provides full dimensional reports, mold flow analysis, and material certification upon request.
TDL ships globally and works closely with U.S. clients to meet tight timelines and demanding specs—often delivering custom tooling within 2–4 weeks.
Key advantages: Custom plastic molds, Precision injection parts, Engineering support, Rapid tooling, ISO 9001
Website: tdlmould.com
Contact: jason@tdlmould.com | +86 769-8228 8296Founded: 1995 | Serves: North America, Europe, Asia
3. Xometry
Xometry is renowned for its custom plastic injection molding services, offering expertise and quality assurance to clients. With a focus on both prototype and production molding, Xometry provides personalized consultation for each project and assigns a dedicated project manager to oversee every order, ensuring a smooth transition from design to production.
Catering to a wide array of industries, including aerospace, defense, automotive, consumer goods, electronics, energy, hardware startups, industrial, lighting, medical, dental, robotics, and more, Xometry’s plastic injection molding solutions are versatile and adaptable. This extensive experience highlights Xometry’s ability to deliver top-notch services across diverse sectors, meeting the unique needs of each industry.
Key advantages: plastic injection molding, blow molding, precision molding, plastic extrusion, plastic CNC machining, plastic prototyping, 3D printing, sheet metal manufacturing, metal injection molding.
Address: 6116 Executive Blvd Ste. 800 North Bethesda, MD 20852
Website: www.xometry.com
Contact: +1-800-983-1959, support@xometry.com
Founded: 2013
4. Berry Global
Berry Global stands as a prominent figure in the injection molding manufacturing realm, boasting a heritage rich in product innovation, customer-centricity, and strategic expansion. Their journey to becoming a leading global provider of innovative solutions has been fueled by the unwavering dedication of team members.
Each day, they embark on a mission to craft inventive packaging and engineered products that enhance both lives and the environment. Leveraging their unparalleled global capabilities, sustainability leadership, and profound expertise in innovation, they cater to customers of all sizes across the globe.
With a workforce exceeding 40,000 skilled individuals spanning over 250 locations worldwide, Berry Global tap into the power of their diverse talent pool and industry-leading expertise in plastics molding.
Key advantages: Plastic Injection Molding Manufacturing, Plastic Mold Building, OEM Plastic Molded Products Making.
Address: Evansville, IN USA
Website: www.berryglobal.com
Contact: +1(877)662-3779
Founded: 2015
5. Proto Labs
Proto Labs prides itself on its extensive range of services, spanning from rapid prototyping to low-volume production. With cutting-edge technology and automated systems, they excel in delivering high-quality plastic parts with impressive turnaround times.
Across industries like aerospace, automotive, medical, and consumer products, they are trusted for their ability to not only meet but often exceed customer expectations. They can handle complex geometries and stringent requirements using engineering-grade resins, ensuring precision and durability. The key lies in configuring tolerances.
Key advantages: low-volume injection molding, plastic injection molding, insert molding, overmolding, liquid silicone rubber molding, CNC machining, 3D printing, and sheet metal manufacturing.
Address: 5540 Pioneer Creek Dr. Maple Plain, MN 55359 United States
Website: www.protolabs.com/
Contact: 877-479-3680, customerservice@protolabs.com
Founded: 1999
6. Jabil
Jabil leverages extensive expertise across various markets, coupled with technical prowess, design capabilities, manufacturing proficiency, supply chain insights, and global product management acumen. This unique blend enables their success as a leading global brand.
As a global injection plastic molding manufacturer, Jabil operates with over 250,000 employees spanning 100 injection molding factory locations in 30 countries. Despite their expansive reach, they may not be a household name because the majority of their products are manufactured for other companies. These clients include 300 of the largest brands globally, spanning diverse sectors such as healthcare, packaging, smartphones, cloud equipment, automotive, and home appliances.
Key advantages: Plastic injection molded products for healthcare, packaging, smartphones and cloud equipment to automotive and home appliances
Address: Auburn Hills, Michigan, United States of America
Website: www.jabil.com
Contact: (727)577-9749
Founded: 1966
7. Plastikon
Plastikon Healthcare, was founded with the ambition to establish itself as a premier plastic and contract manufacturer globally. Presently, both Plastikon and its healthcare division continue to deliver acclaimed services, serving as vital components in the success of numerous leading companies across diverse sectors like medical, automotive, and electronics. Through the utilization of cutting-edge technology and the dedication of its workforce, Plastikon and Plastikon Healthcare have earned a worldwide reputation for surpassing customer expectations.
Key advantages: plastic injection manufacturing, Injection Mold Design & Tooling, Plastic Engineering and Design
Address: 687 Sandoval Way Hayward, CA 94544
Website: www.plastikon.com
Contact: 888-538-9374
Founded: 1984
8. EVCO Plastics
EVCO Plastics serves as your all-in-one solution for plastic injection molding needs. With facilities scattered across the United States, they seamlessly guide your project through every stage, from start to finish.
Whether you require design assistance, mold creation, injection molding, assembly, or post-production work, EVCO’s team handles all aspects of the process, allowing you to relax while leaving the details to them.
No matter the industry you operate in—be it automotive, medical, industrial, or consumer products—EVCO Plastics is equipped to handle your project with precision and expertise.
Using state-of-the-art procedures and cutting-edge machinery, they ensure the rapid and accurate production of even the most complex parts.
Key advantages: Mold Tooling, Plastic injection manufacturing, Injection Mold Design, Plastic Engineering
Address: 121 EVCO Circle, Deforest, Wisconsin, 53532-0497 USA
Website: www.evcoplastics.com/
Contact: 800-507-6000
Founded: 1964
9. Plastic Components
Plastic Components has been a frontrunner in delivering top-notch products within the industry. They took the initiative to submit their PVC trim products for evaluation and certification by an independent third-party testing organization. This ongoing evaluation, overseen by Warnock Hersey, ensures that Plastic Components’ products consistently meet or exceed the stringent standards set by ASTM for factors like tensile and flexural strength, dimensional stability, and exterior weather resistance. With their trims now listed with Intertek Testing Services/ Warnock Hersey, customers have confidence in the exceptional performance and proven compliance of Plastic Components’ products with ASTM standards.
Key advantages: PVC products injection molding manufacturing, plastic mold building
Address: 9051 NW 97 Terrace, Miami, Florida 33178 USA
Website: plasticomponents.com/
Contact: 800-327-7077
Founded: 1969
10. Four Process Ltd
In the journey from concept and prototype to full-scale production and beyond, Four Process stands as a steadfast companion. Specializing in custom precision plastic injection molding services, the team’s commitment extends far beyond mere manufacturing. They adopt a strategic approach to plastic injection molding solutions, ensuring they cater to and anticipate evolving requirements throughout the product’s life cycle.
With flexible operations, Four Process efficiently handles short, medium, and long-term production runs, adapting seamlessly to clients’ specific needs. Their plastic precision injection molding solutions and capabilities guarantee the timely delivery of high-quality plastic molded products.
Key advantages: Custom injection molding, insert molding, overmolding, hot and cold runner injection molding, tool design and custom fabrication, prototyping, component assembly, and packaging.
Address: 595 8th Street Valley Park, MO 63088
Website: www.fourprocessltd.com
Contact: 636-677-5650, sales@fourprocessltd.com
Founded: 1974
11. LTM Plastics
Established in 1977 and currently operating under the name LTM Plastics as an injection mould manufacturer, Lawrence Tool & Molding was initially founded as a tool shop by a veteran. Despite its transformation, it remains a family-owned business, having evolved into a state-of-the-art injection molding facility.
LTM Plastics prides itself on being a mid-to-high volume contract molder known for its collaboration, competence, and production of quality plastic parts. Operating as a Quick Response Manufacturer (QRM), the company possesses the flexibility to adjust internal systems to accommodate almost any project.
Ideal for emerging businesses seeking to introduce new product lines or stabilize their existing supply chain, LTM Plastics offers reliability as a domestic molder.
Key advantages: Custom injection molding tooling, plastic injection manufacturing, mold production.
Address: 1100 W 45th Avenue, Denver, CO 80211, USA
Website: www.ltmplastics.com
Contact: +1(888)258-0218, (303)592-9548, info@ltmplastics.com
Founded: 1977
12. GSH Industries
GSH Industries sets itself apart through its expertise in designing and developing tooling and secondary equipment for a diverse range of plastic extruded shapes and profiles. With a dedicated team aligned with the company’s values of professionalism and customer satisfaction, GSH Industries has become renowned for its contribution to bolstering the local US manufacturing sector. Although privately owned, GSH Industries maintains strong connections with the Strongsville Chamber of Commerce, emphasizing personalized service to the community and ensuring top-notch quality in their work.
Key advantages: custom-made plastic, injection molding, rubber, and aluminum extrusions.
Address: 15242 Foltz Industrial Pkwy, Strongsville, Ohio 44136
Website: www.gshindustries.com/
Contact: 440-238-3009, SALES@GSHINDUSTRIES.CO
Founded: 1986
13. Aptyx
With a commitment to quality, integrity, and a can-do spirit, APTYX is deeply rooted in innovation. Established in 1949, APTYX specializes in manufacturing plastic injection molding components tailored for various industries, including medical, energy, and aerospace.
Their expertise lies in custom plastic molding, encompassing rubber dip coating, dip molding, and molding processes. Additionally, they offer custom plastic injection molding and cleanroom assembly services, enabling clients to meet their needs without outsourcing.
Furthermore, APTYX collaborates with clients to engineer innovative solutions, providing them with the confidence to overcome tough challenges.
Key advantages: Project management, plastic injection molding, extrusion, coatings, and assembly.
Address: 740 W. Knox Rd. Tempe, AZ 85284 USA
Website: aptyx.com
Contact: 1-800-852-1472, info@aptyx.com
Founded: 1949
14. Maryland Plastic Prdts
With over 70 years of experience as a plastic injection mould manufacturer, Maryland Plastic Products evolved from its parent company, Maryland Ceramic & Steatite Company, to establish itself as a prominent manufacturer of molded plastic products, particularly for electronic packaging.
Benefiting from cutting-edge machinery with capacities ranging from 30 tons to 200 tons, Maryland Plastic Products can efficiently process a wide range of thermoplastics.
Thanks to their in-house tool shop, they can swiftly handle design and engineering tasks, resulting in quicker delivery times compared to industry norms.
Key advantages: Injection-Molded Plastics, In-Mold-Label, Custom Molded Plastics, and Custom Engineered Plastics
Address: 251 E Central Ave, Federalsburg, Maryland 21632, US
Website: marylandplasticprdts.com
Contact: (410) 838-4114, sales@marylandplasticprdts.com
Founded: 1939
15. Accurate Products
Accurate Molded Products, Inc. has established itself as a leading manufacturer with a rich legacy spanning over 65 years. Specializing in custom rubber molding and plastic injection molding, the company caters to diverse industries such as industrial, automotive, and agricultural. Operating from facilities in Southeast Asia and Chicago, Accurate Molded Products offers a comprehensive suite of services, including assembly, inventory management, and reverse engineering.
With ISO and TS certifications in place, the company maintains rigorous standards to ensure the highest quality products and processes. Their primary goal is to exceed customer expectations across all aspects of service, including injection molding, product delivery, quality control, and pricing.
Key advantages: plastic injection molding, rubber molding, die cutting, custom tooling.
Address: 4645 N. Ravenswood Ave., Chicago, IL 60640, USA.
Website: www.accurate-prod.com
Contact: 773-878-2200, sales@accurate-prod.com
Founded: 1960
16. Pioneer Plastics
Pioneer Plastics, a leading figure in plastic parts molding, boasts a team of designers and engineers with extensive expertise in the field. They possess in-depth knowledge of the manufacturing process and are adept at guiding clients in selecting the most efficient production methods for their products.
Over the course of nearly four decades, Pioneer Plastics has continuously expanded its manufacturing capacity as a plastic parts manufacturer. Operating from a cutting-edge 100,000-square-foot facility, equipped with state-of-the-art machinery and innovative technologies, they have simplified and improved the custom mold design process for their clientele.
Key advantages: Custom Injection Molding, Custom Plastic Parts Molding, Tool Building, Engineering.
Address: 1584 US Hwy 41 A North, Dixon, KY 42409
Website: www.pioneerplastics.com/
Contact: 800-951-1551,
Founded: 1985
17. Texas injection molding
With extensive experience spanning decades in the manufacturing industry, Texas Injection Molding has finely tuned its expertise in processing both custom plastic and commercial resins. Situated in Houston, Texas, and serving clients across Austin, San Antonio, and the Southeastern United States, the company specializes in delivering custom plastic injection molding services to OEM manufacturing and consumer products industries. Moreover, they provide comprehensive product design and engineering assistance for developing plastic injection molded products.
The company offers innovative solutions for intricate engineering plastics and injection molding applications through strategic partnerships with leading manufacturers of custom resins and compounds.
Key advantages: custom plastic injection molding, plastic engineering, injection mold design and tooling, plastic blow molding, plastic assembly and decoration.
Address: 11015 Bay Commerce Dr, Houston, TX 77034, United States
Website: https://texasinjectionmolding.com/
Contact: +1 281-489-4292,
Founded: 2013
18. MME Group Inc
Notwithstanding its acquisition by Seaway Plastics in 2022, Minnesota Mold and Engineering (MME) has a storied history dating back to 1974, when it emerged as a small tool shop. However, in 2000, MME embraced new challenges within the injection molding arena, solidifying its commitment to delivering top-quality contract manufacturing services under visionary leadership.
Since then, MME has operated 24/7, running a three-shift operation across more than 100,000 square feet of manufacturing space spread over two locations in Minnesota. Moreover, MME boasts a range of state-of-the-art, in-house solutions to meet all deliverables, including both clean room and non-clean room production, an internal tool shop for mold design and builds, and dedicated space for secondary operations and assembly.
Key advantages: Engineering, Tooling, Molding Assembly, Medical, Highly-regulated Consumer Products.
Address: 1185 Willow Lake Blvd, St. Paul, MN 55110
Website: www.mmegroupinc.com/
Contact: +1 (651) 483.0965, info@mmegroupinc.com
Founded: 1974
19. ADM and API
Starting its operations in 1995 as a die and mold production service from a small garage, the company experienced rapid growth within five years, prompting a relocation to a larger facility spanning 221,000 square feet in the Somerset Industrial Park. Subsequently, the expansion of services to include plastic injection molding was driven by increasing opportunities. However, the cornerstone of the business’s growth has been its unwavering commitment to quality craftsmanship and customer satisfaction, resulting in repeat business from loyal customers.
Presently, ADM and API offer a wide array of services tailored to core markets such as Aerospace & Defense, Energy, Medical, Water & Wastewater Treatment, and more.
Key advantages: precision machining, tool & mold design, build, repair, and maintenance, metal injection molding, and plastic injection molding.
Address: 492 Drum Avenue Somerset, PA 15501
Website: admapi.com/
Contact: 814-443-1737
Founded: 1995
20. Valencia Plastics
Established in 2000, Valencia Plastics Inc. has been a trusted Full-Service Blow Molding & Injection Molding Product Manufacturer. They are committed to delivering quality plastic products at affordable prices, maintaining high standards across various industries such as Medical, Commercial, Aerospace, Pharmaceutical, and Military.
Valencia Plastics’ products have a global footprint, contributing to life-saving efforts, supporting military operations, promoting preventive healthcare, and bringing joy to children worldwide. Their innovative solutions have propelled them forward since their inception, making them a go-to choice for inventors bringing their ideas to fruition.
Key advantages: Engineering, Product Design, Manufacturing, Project Management, and Packaging and Distribution.
Address: 25611 Hercules Street, Valencia, CA 91355
Website: www.valenciaplastics.com/
Contact: +1 (844)574-2040, info@ValenciaPlastics.com
Founded: 2000
21. Ken Mold
In 1994, Ken Mold embarked on its journey in China, where its founder, Zhong Jianwu, developed a unique mold-making technique. However, the company soon expanded its operations to the US, catering to a wide range of injection molding needs.
Fast forward over two decades, and Ken Mold has evolved into a premier ISO9001:2008 Certified manufacturer of high-performance, cost-effective custom molds. Serving major industries such as Appliances, Electronics, Automotive (interior and exterior), Packaging, and Medical, they boast cutting-edge equipment with capacities ranging from 25T to 1250T. Additionally, they operate a Class 4 clean room dedicated to medical devices and parts.
Key advantages: R&D, Tooling, and Molding, integrated precision injection molds, and assembly.
Address: WKU R&D Center, 2413 Nashville Rd., Bowling Green, KY
Website: www.kenmold.com/
Contact: +1 270-792-5768, info@kenmold.com
Founded: 1994
22. Steven Plastics Inc.
Drawing upon decades of experience in processing both commodity and custom-engineered plastic resins, Steven Plastics Inc. (a subsidiary of Primarc-Nilan) has been at the forefront of providing solutions for complex plastic engineering applications. Over the span of 33 years, they have specialized in offering custom and production injection molding solutions. Through their in-house Technical Services Team, they ensure the delivery of superior quality molds and injection molded parts to their global clientele.
Fondly referred to as SPI by their customers, Steven Plastics Inc. aims to establish itself as the premier partner in the injection molding industry, offering top-notch mold building and custom plastic injection molding production.
Key advantages: Bespoke plastic injection molding, Advanced injection molding equipment, .
Address: 2125 Stonington Avenue, Hoffman Estates, IL 60169
Website: stevenplastics.com
Contact: 847-885-2300, steve@stevenplastics.com
Founded: 1989
23. Somerset Plastics
With nearly three decades of experience, this family-owned and operated company has been steadfast in its commitment to providing high-quality tooling solutions within tight timelines. Their proficiency extends to supporting a wide array of needs, including new product launches, tradeshow demonstrations, engineering testing, and refining existing products.
Having obtained an ISO 13485:2016 certification, the company specializes in offering plastic injection molding services tailored to industries such as medical, lighting, appliance, electrical, and hardware. Their capabilities encompass molding tasks for both small and large components, covering thermoset molded parts and thermoplastic parts across prototype, low to high, and short-run production volumes.
Key advantages: Plastic Injection Molding (Thermoset Molding/Thermoplastic Injection), Prototype & Design, Production Mold Making, Insert Molding and Overmolding.
Address: 454 Timber Ridge Road, Middletown, Ct. 06457
Website: www.somersetplastics.com/
Contact: (860) 635-1601
Founded: 1981
24. Nylacarb
With three generations of family operation, Nylacarb Corporation has upheld unwavering standards of quality. This commitment entails integrating total quality across various facets of injection molding, such as part inspection, material specification, and mold maintenance. Moreover, their ISO 9001:2015 certification assures customers of their adherence to a robust quality management system throughout the injection molding process.
Based in the Vero Beach area of Florida, Nylacarb prioritizes continuous communication with customers to ensure product compliance and satisfaction. They have optimized their processes across all departments, including Machine Operators, Shift Supervisors, Quality Control Team, all of whom execute their roles promptly and meticulously.
Key advantages: Plastic Injection, Insert Molding, In-Mold Decorating.
Address: 1725 98th Avenue, Vero Beach, FL 32966
Website: nylacarb.com/
Contact: 772-569-5999, innovate@nylacarb.com
Founded: 1988
25. PTI Tech
Established in Bloomfield, New Jersey, in 1987, PTI Tech emerged with a clear goal: to deliver top-notch precision injection molding services to aerospace, medical, and defense sectors. As demand surged, PTI expanded, moving to a larger 40,000 sq. ft. facility and later to a 100,000 sq. ft. space in Clifton, New Jersey. This strategic relocation fueled PTI’s growth and facilitated a stronger focus on research and development, particularly in Metal Injection Molding. Notably, it forged partnerships with AlliedSignal/Honeywell and secured a significant $5 million research grant from the National Institute of Standards and Technology (NIST).
Key advantages: R&D, Prototyping, Polymer Injection Molding, Metal Injection Molding, Tungsten Injection Molding
Address: 10 Clifton Boulevard Clifton, New Jersey 07011, USA.
Website: pti.tech/
Contact: 973-778-9100
Founded: 1987
26. VEM Tooling
With over three decades of experience, VEM Tooling has been at the forefront of the injection molding industry, providing comprehensive solutions for molding and tooling needs. Their team of seasoned engineers offers expert insights into design, manufacturability, and flow analysis, ensuring the flawless execution of plastic injection molding projects.
VEM Tooling is proficient in all aspects of the molding process, from initial design to assembly solutions. Extensive testing is conducted to maintain the highest standards of quality throughout the production process. Over the years, VEM Tooling has been instrumental in establishing successful injection molding and assembly lines across various industries, both locally and internationally.
Key advantages: Manufacturing, tooling, molds, plastic injection, mold flow, multi-cavity tools, medical, automotive, aerospace, and electronics
Address: 235 W. Paul, Clovis, CA 93612, US
Website: www.vem-tooling.com
Contact: +1 908 892 6872, BRYAN.CARROLL@VEM-LTD.COM
Founded: 1998
27. Nubs Plastics Inc
Established in 1997 and headquartered in San Diego, California, Nubs Plastics, Inc. is renowned for its expertise in manufacturing molded plastic products. Specializing in precision plastic injection molding and contract manufacturing, the company offers a comprehensive range of services, including design, engineering, materials selection, molding, mold making, and quality control.
With ISO 9001:2015 certification, Nubs Plastics caters to a diverse clientele across industries such as aerospace, medical, irrigation, and consumer products. Their streamlined manufacturing process ensures efficiency, and stringent quality checks guarantee the delivery of only top-quality products to customers.
Key advantages: design and engineering, materials selection, molding, mold making, and quality contro
Address: 991 Park Center Dr, Vista, CA 92081, United States
Website: www.nubsplasticsinc.com
Contact: 1-760-598-2525, sales@nubsplastics.com
Founded: 1997
28. Xcentric Mold & Engineering
Xcentric Mold & Engineering has solidified its position as a reputable plastic injection molding company in the United States. Renowned for its comprehensive services, the company covers everything from rapid prototyping to bridge tooling solutions, ensuring prompt fulfillment of each customer’s unique requirements.
Backed by a highly skilled team and cutting-edge technology, Xcentric Mold & Engineering guarantees a seamless start to every project. Their unwavering commitment extends to optimizing designs for manufacturability and cost efficiency. Throughout the process, expert coaches oversee quality control while maintaining cost-effectiveness.
Key advantages: Plastic Injection Molding Manufacturing, Prototype Injection Molding, Mold Making
Address: 24541 Maplehurst Dr, Clinton Twp, MI, USA
Website: https://xcentricmold.com/
Contact: +1(206)203-1430, sales@quickparts.com
Founded: 1998
29. Crescent Industries
With a focus on plastic injection molding, Crescent Industries stands as a premier manufacturer, offering end-to-end solutions spanning from design conception to final production. Their comprehensive services encompass product development, mold fabrication, assembly, and packaging, catering to a wide array of industries such as medical, aerospace, and industrial sectors. Renowned for their expertise in design optimization and material selection, Crescent Industries guarantees unmatched performance across various applications.
Ranked among the top-tier plastic injection molding companies nationwide, Crescent Industries is deeply committed to understanding and meeting their customers’ unique requirements. Their priority lies in delivering products that align with contracted specifications within the stipulated timeline.
Key advantages: Plastic injection molding service, Tooling for Injection Molding, custom injection molding.
Address: 70 E High St, New Freedom, PA 17349, United States
Website: www.crescentind.com
Contact: 717-235-3844, sales@crescentind.com
Founded: 1997
30. Ironwood Plastics Inc.
Founded in 1979 by Gordon K. Stephens, Ironwood Plastics stands as one of Michigan’s premier plastic injection molding companies. Recognizing the dynamic nature of technology, the company remains proactive in staying abreast of the latest trends and advancements to deliver superior-quality products to its clients.
Renowned for its expertise in insert molding and injection molding, the company has built a solid reputation for successfully executing even the most intricate projects within the industry.
Key advantages: Injection-Molded Plastics, Custom Engineered Plastics, and Custom Molded Plastics
Address: 1235 Wall Street Ironwood, MI 49938
Website: https://www.ironwood.com/
Contact: 906-932-5025
Founded: 1979
How to Choose the Right Injection Molding Partner in the U.S.
Finding a trusted injection molding partner isn’t just about comparing quotes. The real value lies in selecting a supplier whose capabilities match your project’s technical, quality, and timeline needs. Here’s a practical framework to help you evaluate potential partners more effectively.
Key Criteria to Assess
Before committing to a vendor, consider the following:
- Certification & Compliance: Look for ISO 9001, IATF 16949 (automotive), or ISO 13485 (medical) certifications to ensure quality systems are in place.
- Mold Design & Engineering Support: A supplier who offers DFM (Design for Manufacturability) reviews and moldflow simulation can save you from costly tooling errors.
- Industry Experience: Prioritize companies with a proven track record in your sector—medical, automotive, aerospace, or consumer products.
- Production Capacity & Flexibility: Do they handle prototypes to high-volume? Can they scale with your product?
- Tooling Capabilities: Ask whether they manufacture tools in-house or outsource. In-house tooling often means faster iteration and better IP control.
- Lead Time & Communication: Fast turnaround is great—but only if paired with reliable project communication and transparency on delays.
Questions to Ask Shortlisted Vendors
- “Do you conduct moldflow analysis before tool fabrication?”
- “Can you support DFM feedback during the design phase?”
- “What tolerances can you consistently maintain for multi-cavity tools?”
- “Do you offer PPAP or FAI documentation for regulated industries?”
These questions help differentiate real manufacturing partners from general brokers.
Match by Company Type
| You are a… | Prioritize suppliers who… |
| Startup | Offer design guidance, low-volume tooling, and flexible pricing |
| OEM/Enterprise | Have scalable production, strict quality systems, global shipping |
| Medical/Aerospace | Provide cleanroom molding, traceability, and regulatory experience |
Choosing the right injection molder isn’t about finding the biggest name—it’s about finding the best fit for your application. This guide helps you ask smarter questions and focus on what truly matters: reliability, repeatability, and long-term value.
Project Checklist: What to Prepare Before Contacting a Supplier
Reaching out to an injection molding company without clear project data can delay quotes, increase miscommunication, or result in mismatched expectations. Before you contact any of the companies listed above, make sure you’ve prepared the following key details:
What You Should Have Ready
- 2D or 3D Part Drawings: Most suppliers will require a STEP (.stp/.step), IGES, or STL file. If not available, even a detailed sketch with key dimensions is better than nothing.
- Estimated Annual Volume: Let them know whether you need 500 units or 500,000. This affects tooling design, pricing strategy, and lead time.
- Material Requirements: Do you need medical-grade ABS, glass-filled nylon, or food-safe polypropylene? Mention any certifications (e.g., FDA, RoHS) required.
- Functional vs Cosmetic Priorities: Be clear on what matters most: tight tolerances, load-bearing strength, or surface finish?
- Timeline & Budget Range: When do you need parts in hand? What’s your target tooling and unit cost? Even rough numbers help the supplier tailor a solution.
Pro Tip: The more complete your RFQ package is, the faster you’ll receive an accurate and meaningful quote. Suppliers are more likely to prioritize well-defined projects—and can often recommend better alternatives when they clearly understand your needs.
Conclusion
From high-volume production to complex custom molding, the 30 companies listed here represent a cross-section of the U.S. injection molding industry’s best. Each offers proven capabilities, from toolmaking and engineering support to full-scale part manufacturing.
If you’re sourcing a new supplier or benchmarking your current one, this guide can be your starting point. Bookmark it, revisit it when planning your next project, or use it to ask better questions in your RFQ process.
Finding the right partner starts with knowing who delivers—this list puts them at your fingertips.
Still have questions about working with injection molding suppliers in the U.S.? The FAQ below addresses common concerns from sourcing teams, engineers, and product developers.
Frequently Asked Questions (FAQ)
Is plastic injection molding in the U.S. more expensive than overseas?
Yes, generally—but it depends on what you’re optimizing for.
U.S. injection molding typically comes with higher labor and overhead costs, which can make tooling and per-part pricing more expensive than suppliers in China, Southeast Asia, or Eastern Europe.
However, cost isn’t just about price per unit. U.S. suppliers often offset the higher base cost with:
- ✅ Faster turnaround times (especially for prototype or short runs)
- ✅ Stronger IP protection
- ✅ Lower freight and import duties
- ✅ Better communication and fewer errors
- ✅ Compliance with U.S. quality, safety, and environmental regulations
For low-to-medium volume, highly regulated, or fast-iteration projects, U.S.-based injection molding may actually be more cost-effective overall, especially when time-to-market, rework risks, and logistics are factored in.
If you’re producing high volumes with long lead times and stable designs, overseas might offer more savings—but only if you have a strong QA process and supplier control in place.
Do these companies offer help with product design or prototyping?
Yes—many U.S. injection molding companies provide design and prototyping support, especially those serving startups or early-stage product developers.
Services may include:
- 🛠️ Design for Manufacturability (DFM) reviews
- 📊 Mold flow analysis to predict how plastic will fill the mold
- 🧪 Rapid prototyping using 3D printing or soft tooling
- 📐 CAD assistance to optimize wall thickness, draft angles, or gate placement
Some companies, like Proto Labs or Xcentric Mold, specialize in quick-turn prototyping and low-volume production, making them ideal partners for product validation and iteration. Others offer engineering consultation to reduce tooling risks and avoid common design flaws before cutting steel.
If you’re still refining your product, choose a supplier that explicitly mentions in-house design support, early-stage collaboration, or prototyping capabilities.
What certifications should I look for in a reliable injection molding supplier?
That depends on your industry—but at a minimum, look for ISO 9001 certification, which ensures the company follows consistent quality management systems.
Here are other key certifications based on your product type:
| Industry | Recommended Certifications |
| Automotive | IATF 16949 (formerly TS 16949) |
| Medical Devices | ISO 13485, FDA registration, Cleanroom compliance |
| Consumer Products | UL 94 (flammability), RoHS, ISO 9001 |
| Aerospace | AS9100 (less common but required in aerospace supply chains) |
Additionally, if your parts require regulatory documentation, such as PPAP (Production Part Approval Process), FAI (First Article Inspection), or full traceability, ensure your supplier has experience meeting those protocols.
Bonus tip: Don’t hesitate to request copies of certifications and audit history during supplier evaluation—it’s a standard part of the RFQ process.
Can I move my existing mold to a new supplier?
Yes, you can—but it’s not always plug-and-play.
Transferring an injection mold to a new supplier is a common practice, especially when switching for better pricing, quality, or lead time. However, the success of a mold transfer depends on several factors:
What the new supplier needs to evaluate:
- Mold ownership: Ensure you own the tool and have full rights to transfer it.
- Mold condition: Worn or poorly maintained tools may require rework or retrofitting.
- Compatibility: The mold must fit the new supplier’s press tonnage and setup.
- Missing documentation: Lack of mold drawings, steel type, or cooling layout can delay production.
Best practices for a smooth transfer:
- Include full mold documentation: 2D drawings, material certificates, maintenance logs.
- Ask for a trial run at the new supplier to validate part quality.
- Expect a short qualification period with potential adjustments for tooling, cycle time, or part ejection.
- Clarify who handles shipping, setup, and any reconditioning costs.
Pro tip: Some top-tier suppliers offer mold transfer audits and can help assess whether refurbishment or redesign is needed before production resumes.
Related Articles:
U.S. Injection Molding Innovations: Shaping the Industry’s Future
The Role of Injection Molding in the American Manufacturing Renaissance
