Top 20 Reliable Plastic Injection Molding Companies
Leading plastic injection molding companies excel in delivering high-quality, cost-effective solutions, utilizing state-of-the-art machinery and advanced engineering expertise. These plastic injection molding manufacturers offer comprehensive services, from design consultation to prototyping and mass production. With a commitment to innovation and quality assurance, they play a pivotal role in meeting diverse industry demands.
Partnering with reputable plastic injection moulding suppliers can ensure efficient production processes, fostering the development of innovative and durable products for a myriad of applications. Let’s continue to know about these top plastic injection molding companies.
List of Top Plastic Injection Molding Companies
- Britech Industries
- HiTech Plastics and Molds
- Sungplastic
- Seaway Plastics Engineering
- The Plastek Group
- Ironwood Plastics Inc.
- Jones Plastic & Engineering
- Decatur Mold, Tool, & Engineering Inc.
- American Tool & Mold Inc.
- Magna LexaMar Corporation
- MMI Engineered Solutions
- Alwin Manufacturing
- LTM Plastics
- GSH Industries, Inc.
- AIM Processing
- Abtec, Inc.
- Protoshop
- D.A. Inc.
- Murray Plastics Inc.
- SigmaPro Engineering & Manufacturing, LLC
1.Britech Industries
Type of Business: Plastic Injection Molding Company.
Location: FL, USA.
History: Since 1984.
Key Products & Service: Custom Plastic Injection Molding, Mold Design and Engineering, Rubber Molding, Rubber Extrusion, Plastic Extrusion.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Britech Industries’ team of engineers has dedicated years to crafting mold designs, responding to customer requests arising from their product production needs. These intricate designs, born out of detailed customer specifications, are meticulously produced, showcasing the expertise and skills of the specialists at Britech Industries.
With a wealth of experience, Britech Industries has evolved from its origins as a local supplier to its current status as a global leader in the production of injection molded plastic products. Over the years, plastic injection molding has established itself as the most cost-effective method for manufacturing parts and components. Britech has been a key player for over 25 years, specializing in assisting customers in the low inventory, just-in-time environment of industrial production.
Britech’s rapid injection molding process provides design engineers with a quick and cost-effective solution to obtain real injection molded parts in low volume quantities. The company specializes in custom injection molded plastic parts, utilizing complex tooling and resins to meet the unique needs of their clients.
2.HiTech Plastics and Molds
Type of Business: Plastic Injection Molding.
Location: CA, USA.
History: Started in 1984.
Key Products & Service: Custom Injection Molding, 2-Shot Injection Molding, Insert Molding, Overmolding, Mold Building, Prototype Production, Assembly, Packaging, Secondary Services.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
HiTech Plastics and Molds (“HiTech”) stands out for its provision of top-tier engineering and extensive expertise in US-based manufacturing solutions. The company’s services encompass mold building, repair, and custom plastic part injection molding. HiTech specializes in overseeing all facets of the plastics side during product launches and ongoing molding requirements, utilizing advanced techniques and ERP software for optimal manufacturing practices.
At HiTech, a commitment to high standards is evident, consistently delivering precise and quality injection molded parts. The leadership team, with over a century of combined experience in custom plastic molding, takes pride in serving diverse industries, including Defense, Medical, Computer & Electronics, Irrigation, Consumer, and Automotive.
As a frontrunner in injection molding and plastic part manufacturing, HiTech manages both engineering materials and commodity-based plastic resins. The company offers an extensive range of molded products, spanning common materials like PP, HDPE, HIPS, and ABS to more exotic options such as Xenoy, Ultem, PEEK, and TPU/TPV materials.
3.Sungplastic
Type of Business: Plastic Injection Molding Manufacturer.
Location: Dongguan, Guangdong province, China.
History: Over 20 years.
Key Products & Service: Plastic Mold Manufacturing, Plastic Injection Molding, Overmolding, Insert Molding, Rapid Prototyping.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Sungplastic, a Chinese plastic injection molding factory with over two decades of expertise, is dedicated to rapid prototyping, plastic injection molding production, and plastic mold fabrication. Our focus lies in customized plastic part molding across diverse sectors, including electronics, automotive, consumer products, and the medical industry. With a remarkable proficiency in producing products with precise tolerances and exceptionally high surface finishes, Sungplastic stands out in the industry.
As a premier plastic molding parts manufacturer, we specialize in working with engineering-grade plastics, thermoplastics, modified plastics, and composites to create tailor-made molded plastic components. Our commitment extends to meeting specific requirements such as chemical resistance, flexural strength, durometer, and yield strength.
Drawing on a wealth of professional injection molding knowledge and production experience, Sungplastic has proudly served numerous countries and established brands worldwide as a trusted plastic molding fabricator.
4.Seaway Plastics Engineering
Type of Business: Plastic Injection Molded Products Manufacturer.
Location: Florida, USA.
History: Over 30 years.
Key Products & Service: Mold Design and Making, Plastic Injection Molding, In-House Tooling, Clean Room Molding, Post Molding Operations, Low to Mid Volume Injection Molding.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Seaway Plastics stands at the forefront of the industry, offering tailored solutions for custom plastic injection molding, particularly as specialists in low to mid volume production for highly regulated sectors. With a rich history spanning decades and a presence in five strategic locations across the United States, they address complex challenges in medical, aerospace/defense, consumer, and precision industrial domains. Their comprehensive services include collaborative engineering partnerships and post-molding solutions, setting them apart, especially for lower volume orders.
Established in 1991, Seaway Plastics Engineering is dedicated to delivering molded products, emphasizing expertise in prototype injection molding, plastic mold design, mold making, and low-volume production. Beyond molding, Seaway provides an array of value-added services, including EMI shielding, assembly, pad printing, ultrasonic welding, and more. Their mission revolves around creating dependable parts and assemblies for a global customer base, positioning themselves as a holistic solution provider for plastic injection molding needs.
5.The Plastek Group
Type of Business: Plastic Injection Manufacturer.
Location: Pennsylvania, USA.
History: Since 1956.
Key Products & Service: Plastic Injection Molding, Mold Design and Making, Package Design & Development, Custom Product Design.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
The Plastek Group operates as a premier plastic injection molding service provider in the United States. Headquartered in Erie, Pennsylvania, we stand as a renowned manufacturer specializing in plastics packaging for the Personal Care, Beauty, Home Care, Pharmaceutical, and Food & Beverage Packaging Industries on a global scale.
Their expertise spans across Industrial Design, Product and Package Development, Mold Design and Construction, encompassing Injection, Injection Blow, and Injection Stretch Blow Molding. Additionally, they offer value-added services in Assembly and Decorating.
Since their inception as a Tool Making Company in 1956, they’ve expanded significantly, evolving into a key global plastic injection molding supplier for numerous top-tier companies worldwide. With a presence in the USA, UK, Mexico, and Brazil, The Plastek Group has become a leading supplier of plastic molds, leveraging client product concepts to craft highly efficient and dependable solutions. They excel in translating your product innovations and concepts into an optimal, reliable, and top-quality Supply Chain system.
6.Ironwood Plastics Inc.
Type of Business: Plastic Molding Manufacturer.
Location: Michigan, USA.
History: Since 1979.
Key Products & Service: Plastic Injection Molding, Insert Molding, Overmolding, Close Tolerance Molding, Two Shot Molding, Reel to Reel Molding.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Ironwood Plastics has led the plastics injection molding industry since 1979. Gordon K. Stephens founded the business, which was acquired by CTB, Inc., a Berkshire Hathaway company, in 2010. Since technology is always evolving, they take advantage of their cutting-edge facilities in Ironwood, Michigan, and Two Rivers, Wisconsin, to stay ahead of the curve and provide their clients with the best injection molded products possible that are tailored to their specific needs.
With more than 200 years of experience in the plastic injection molding business, Ironwood Plastics’ management offers its clients the assurance that their staff is capable of handling even the most difficult problems. Its reputation is based on completing the most difficult projects in the sector, with a focus on injection molding and insert molding.
7.Jones Plastic & Engineering
Type of Business: Plastic Molding Supplier.
Location: Kentucky, USA.
History: Since 1961.
Key Products & Service: Injection Molding, Tooling, Insert Molding, Overmolding, Product Development, Paint & Hydrographics
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Established in 1961 by Harry and Larry Jones, Jones Plastic & Engineering has evolved into a global leader in injection molding technology, specializing in automotive and home appliance molds. With five manufacturing units in the United States and subsidiary companies in Europe and Asia, their commitment and diligence have propelled them to international acclaim.
Jones Plastic offers comprehensive services, including engineering, product design, integration, and contract manufacturing of diverse injection molded components and subassemblies. Equipped with in-house 3D printing capabilities, they can swiftly validate designs or provide soft-steel prototype samples within two weeks.
The company excels in insert-molding and over-molding, handling a spectrum of inserts, from small metal conductors to substantial 16 lb iron bearings. Renowned for their 20 years of expertise in gas-assist injection molding (GAIM), Jones Plastic is recognized for its ability to expedite product market entry.
Strategically located units help minimize freight and labor costs, further solidifying Jones Plastic’s reputation for injection molding proficiency and efficient product delivery.
8.Decatur Mold, Tool, & Engineering Inc.
Type of Business: Injection Molding Fabricator.
Location: North Vernon, USA.
History: Since 1966.
Key Products & Service: Injection Molding, Tool Design, CNC Machining, Mold Manufacturing, Prototype Tooling.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
When Decatur Mold was founded in 1966, it employed just 5 people in a 2,400 square foot facility to do plastic injection molding. It has a strong work ethic and a desire to offer the highest caliber goods available in the market. This injection molding company dedicated to innovation and facilitated the growth of a worldwide customer base.
Decatur Mold’s goal is to help its clients become more competitive in the market by offering highly accurate molds. In an attempt to create a new benchmark for excellence in the mold-making sector, it attempts to combine American work ethic with technology of the future. Its facilities are open around-the-clock to ensure prompt delivery of its products, particularly for urgent orders.
9.American Tool & Mold Inc.
Type of Business: Plastic Molding Manufacturing.
Location: FL, USA.
History: Since 2005.
Key Products & Service: Injection Molding, Mold Design, Engineering and Manufacturing.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
American Tool & Mold Inc. stands as a leading plastic injection molding manufacturer in the USA, specializing in multi-cavity molds, custom plastic 3D printing, and assembly services. Our commitment lies in the development of high-precision products, utilizing cutting-edge technology and methodologies.
Renowned for our expertise in designing and constructing intricate, precision-oriented multi-cavity molds, we excel in providing thin-wall, stack, hot runner, unscrewing, and two-shot molds. Adopting the latest methods and technologies, we ensure the delivery of top-notch solutions.
What sets ATM apart is our molder-friendly approach, offering a unique combination of the finest resources—advanced technology equipment, exceptional workmanship, and adaptable program management and product development techniques. This enables us to cater to the distinctive requirements of one-of-a-kind projects, as well as multiple cavity and mold programs with equal proficiency.
American Tool & Mold Inc. brings a blend of premier resources and quality craftsmanship to meet the unique needs of our clients effectively.
10.Magna LexaMar Corporation
Type of Business: Plastic Injection Moulding Manufacturer of Automotive Products.
Location: MI, USA.
Key Products & Service: Injection Molding for Automotive Industry.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Plastic injection molded exterior parts are supplied by LexaMar, a Tier 1 automotive supplier that leads the industry. They have a competitive advantage thanks to our cutting-edge capabilities, and they are ranked highly among some of the biggest automakers in the world thanks to our dedication to excellence.
They mainly focus on the injection molding for Body Exteriors & Structures, Power & Vision, Seating Systems, Complete Vehicles, With operations in 29 countries and 344 manufacturing centers around the world, Magna is uniquely suited to help build your plastic parts molding technology and system innovation and development, at scale.
11.MMI Engineered Solutions
Type of Business: Plastic Injection Moulding.
Location: Michigan, USA.
History: Over 42 years.
Key Products & Service: Plastic Injection Molding Manufacturing & Assembly, Concept Development, Component Design & Engineering, Full-Service Tool Design & Build, Prototyping, Blow Molding.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Leveraging cutting-edge technology, they enhance both design and functionality. Specializing in advanced composites and engineered resins, they assist OEM product designers and manufacturing engineers in creating innovative solutions.
Their comprehensive services encompass Concept Development, Component Design & Engineering, Full-Service Tool Design & Build, Prototyping, Plastic Injection Molding Manufacturing & Assembly, all operating on a 24×7 basis. With certifications in ISO 14001 and IATF 16949, they provide a steadfast guarantee of quality and compliance.
12.Alwin Manufacturing
Type of Business: Plastic Injection Moulding Fabricator.
Location: FL, USA.
History: Since 1928.
Key Products & Service: Injection Molding, Mold Design and Building, 2-Shot Molding (Rotational & Transfer), Over-Molding & Insert Molding, Machining (including milling, drilling, tapping and reaming), Pad Printing, Hot Stamping & Engraving.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
The foundation of our business is plastic molded product design and development. We create custom injection moulding solutions. We translate the concepts and ideas of our customers into completed goods from the very beginning of production.
With a tonnage ranging from 60 to 900 tons, Alwin uses 21 injection molding machines, more than half of which have Star Automation Robots installed. Your biggest and trickiest plastic injection molding projects are within our capabilities! We minimize lead times and put forth great effort to make sure your molded products project is completed promptly and effectively by working three shifts, seven days a week.
13.LTM Plastics
Type of Business: Plastic Molding Company.
Location: USA.
History: Established in 1997.
Key Products & Service: Plastic Molding, Industrial Design, Transfer Tooling, Part Design and Tool Engineering, Insert and Over Molding.
Materials：ABS, PP, PE, PMMA, PS, PC, PEEK, PVC, and more.
Company Background and Advantage:
LTM Plastics stands out as a contract molder and plastic injection molding company specializing in mid-to-high volume production, renowned for its commitment to collaboration, competence, and the delivery of top-notch plastic injection molded components. Operating as a Quick Response Manufacturer (QRM), they possess the agility to customize internal systems for a wide range of projects.
They are the perfect match for evolving enterprises seeking to introduce new product lines or aiming to secure their existing supply chain with a dependable molder based in the United States.
Their approach involves close collaboration with clients to craft tailored solutions that cater to unique requirements. Leveraging extensive experience in plastic injection molding, they excel in producing high-quality custom injection molded products that not only meet stringent standards but also prove efficient on the manufacturing line. Additionally, their capabilities often extend to providing full assembly services at the press. Their operation is designed to accommodate companies of varying sizes, serving clients with production needs ranging from as few as 10,000 parts to well over 1 million parts annually.
14.GSH Industries, Inc.
Type of Business: Plastic Custom Injection Moulding.
Location: Ohio, USA.
History: Since 1986.
Key Products & Service: Plastic Injection Molding, Plastic Extrusion, Aluminum Extrusions, Rubber Extrusions, Prototype Production, CNC machining.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
As far as custom plastic injection molding goes, GSH Industries is a pioneer. Their quality control department, engineering department, and in-house moulding capabilities all contribute to their ability to offer excellent customer service throughout the entire manufacturing process.
With fifteen injection molding machines, which range in capacity from 75 to 1,500 tons, they can create a vast array of customized prototypes, from intricate small plastic injection parts to expansive adorned assemblies. Their engineers and designers will help you with the design of your custom plastic molded product from the drawing board to the assembly line because they have experience producing high-quality plastic molding parts. Together, they will identify the ideal components, layout, and construction techniques required to produce a high-quality final product.
15.AIM Processing
Type of Business: Plastic Part Injection Moulding.
Location: Colorado, USA.
History: Established in 1993.
Key Products & Service: Injection Molding, Small Plastic Parts Injection Molding, Insert Molding And Overmolding, Tooling, Secondary Service.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
AIM Processing is a custom plastic injection molding factory and manufacturer. They provide ongoing support to clients in a range of industries, such as electronics, medical, automotive, industrial, and performance sporting goods, both locally and internationally.
They specialize in small plastic injection molding components that are easier to manufacture, more cost-effective, and more productive for their clients. Their first goal is to guarantee that perfect molded parts are produced on schedule.
They are registered under ISO 9001 and welcome in-depth customer inspections. They have been providing competitive pricing and parts that precisely meet requirements and expectations for over 25 years, thanks to their employment of top plastics specialists.
16.Abtec, Inc.
Type of Business: Custom Plastic Moulding Company.
Location: USA.
History: Over 100 Years.
Key Products & Service: Custom Plastic Injection Molding, Custom Tooling, Mold Design, Prototyping.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
One US custom plastic injection molding company, Abtec, Inc., offers its support tooling services all over the world. With more than a century of combined experience, their team of professionals is highly skilled at coming up with original solutions for a range of tooling requirements and production difficulties, producing high-quality injection molded parts quickly. Their all-inclusive custom injection molding services include, among other things, mold and part design.
Their custom plastic moulding company uses its extensive industry experience to ensure the manufacturability of quality parts, from prototype development to short-run and mass production. Abtec goes above and beyond by helping with part design, saving money on prototypes that might be difficult to produce. They make sure we constantly exceed our customers’ expectations by using cutting edge, state-of-the-art technologies and plastic injection molding processes.
17.Protoshop
Type of Business: Custom Plastic Moulding.
Location: CA, USA.
History: Established in 1993.
Key Products & Service: Injection Moulding, Prototype Mold Fabrication, Rapid Prototyping, Overmolding, Insert Molding, Plastic Part Design.
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
Protoshop was founded by Dylann Ceriani and James Isaacs, both seasoned professionals with extensive experience in medical product development, having worked on numerous plastic part designs, plastic molding production and prototype molds. Identifying shortcomings in existing prototype molding services, they noticed issues such as the rejection of complex part geometry, the absence of mold iterations, prolonged lead times for molds and parts, and the production of subpar-quality components.
Recognizing a market demand for improved prototype molding services, Protoshop was established. The founders introduced a patented process for crafting prototype molds, allowing for swift and high-quality plastic molding fabrication, coupled with the ability to iterate molds quickly to meet evolving requirements.
18.D.A. Inc.
Type of Business: Custom Injection Moulding Company.
Location: IN, USA.
History: Established in 1988.
Key Products & Service: Injection Molding, Part Design, Mold Design
Materials：ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.
Company Background and Advantage:
For polypropylene (PP), acrylonitrile butadiene styrene (ABS), acetal, copolymer polypropylene, high density polyethylene (HDPE) or low density polyethylene (LDPE), nylon, polyethylene terephthalate (PET), polystyrene, and thermoplastic, D.A. Inc. offers plastic injection molding services. additionally a custom clamp, clip, and protector manufacturer. The following clip types are available: electric, cushion, cluster, pillar, trim, instrument panel, bolt, over fender, battery cover, fuel lid cover, panel fixed, screw grommet, and cap. Band, taped, electronic assembly, bracket insertion, stud bolt, corrugated tube, flange insertion, connector, cable and hose holding, line assembly, washer hose, and antenna are some examples of clamp types. Prototypes and production runs in varying quantities are accessible. provides services to the tool and die, truck, automotive, agricultural, farming, alternative energy, appliance, and commercial industries.
D.A. Inc. is the leading injection molding supplier of plastic fasteners and protectors globally. We have manufacturing locations worldwide. We supply to the automotive industry for the design development and manufacturing of your custom injection molded plastic components and light assemblies.
19.Murray Plastics Inc.
Type of Business: Plastic Custom Injection Molding Company.
Location: Georgia, USA.
Key Products & Service: Plastic Injection Molding, Plastic Part Design and Engineering, Mold Building, Resin Selection, Finishing and more services.
Materials：ABS, PP, PE, PMMA, PA, PC, PVC and more.
Company Background and Advantage:
Murray Plastics is an American manufacturer of injection molds and plastic injection molding. They have many years of experience designing, creating tools, and producing plastic molded parts. Their management team has extensive experience across a variety of industries. Murray Plastics is located in Gainesville, Georgia, northeast of Atlanta.
With decades of combined experience, this group of engineers and industry professionals provides clients with guidance and support. Numerous content customers have been utilizing them for many years. They provide services for all stages of the production process and strive to customize services to meet the needs of each unique customer. Their commitment is to be a competitive supplier of plastic molding in the United States. They are able to work with numerous plastic materials, including environmentally friendly ones.
20.SigmaPro Engineering & Manufacturing, LLC
Type of Business: Precision Plastic Injection Molding Company.
Location: Georgia, USA.
History: Since 1999.
Key Products & Service: Plastic Injection Molding, Micro Injection Molding, Prototyping, 3D Printing, Engineering & Development.
Materials：ABS, PP, PE, PMMA, PA, PC, PVC and more.
Company Background and Advantage:
You can travel farther and faster with SigmaPro because they are the ONLY precision plastic injection molding partner that delivers at hyper-speed. They offer services for micro, miniature, small, multi-component, plastic injection, complex plastic part molding and insert molding. Works with polypropylene, ABS, acetal, acrylic, fiberglass reinforced plastic, nylon, polyetheretherketone (PEEK), polystyrene, phenolic, polysulfide, polypropylene, polystyrene, PTFE, polysulfone, thermoset, low and high density polyethylene, and polyphenylene sulfide. Engineering and product design services are also offered. Prototypes and production runs in varying quantities are accessible. provides services to the semiconductor, optical, robotics, aerospace, automotive, communications, electronics, medical, and wastewater treatment industries.
Conclusion
Exploring these diverse plastic injection molding companies showcases the industry’s breadth and capabilities. If you’re seeking tailored solutions or have specific inquiries, we invite you to reach out to us. Our team is ready to provide expert guidance and discuss how we can meet your unique plastic injection molding needs. Contact us today for a personalized consultation and discover the innovative solutions we can bring to your plastic injection moulding or mold engineering projects.
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