Top 10 Excellent Contract Injection Molding Manufacturers


Contract injection molding refers to the process of outsourcing your injection molding needs to specialized manufacturers. This manufacturing approach offers numerous advantages, including cost-effectiveness, scalability, and access to state-of-the-art equipment and expertise.

Here we will explore contract injection molding and introduce some top contract injection molding manufacturers for your project. Whether you’re a startup or an established company, understanding the advantages and considerations of contract injection molding is crucial for successful product development.

Join us as we delve into the world of contract injection molding and guide you towards making informed decisions. Continue reading to unlock the full potential of this custom manufacturing solution.

contract injection molding- custom plastic injection molded parts

List of Contract Injection Molding Manufacturers

  • Dalton Manufacturing and Consulting Group
  • SEA-LECT Plastics Corporation
  • Sungplastic
  • Ferriot Inc.
  • EVCO Plastics
  • Mack Molding Co.
  • Bemis Manufacturing Company
  • Natech Plastics
  • PTI Engineered Plastics, Inc.
  • Flambeau, Inc.

1.Dalton Manufacturing and Consulting Group

WordPress website

Type of Business: Contract Injection Molding.
Location: OH, USA.
History: Since 2007.
Key Products & Service: Custom Plastic Contract Injection Molding, Metal Fabrication, Parts Design.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Dalton Manufacturing and Consulting Group is a seasoned professional organization specializing in the manufacturing of plastic molded parts and metal components, as well as fully assembled parts for clients worldwide. They provide contract injection molding manufacturing services to a diverse range of industries, including aerospace, automotive, consumer goods, appliances, medical, mining, oil and gas, construction, marine, HVAC, transportation, and telecommunications.

Working with a variety of materials such as stainless steel, aluminum, copper, iron, titanium, carbon fiber, nylon, acetal, acrylic, silicone, ABS, LDPE, HDPE, PEEK, PET, and PVC, Dalton Consulting Group offers comprehensive contract manufacturing capabilities. These include plastic injection molding, CNC machining, casting, stamping, forging, and welding services. They are equipped to handle prototype development as well as low to high volume production requirements.

At Dalton Manufacturing and Consulting Group, we collaborate with the world’s leading suppliers to facilitate the successful manufacturing of your plastic product. No matter what your project requires, our expert contract injection moulding manufacturing teams go above and beyond every time. Our custom contract injection molding manufacturing services result in exceptional production quality.

2.SEA-LECT Plastics Corporation

WordPress website

Type of Business: Contract Injection Molding Manufacturing.
Location: WA, USA.
History: Since 1987.
Key Products & Service: Contract Injection Molding, Tooling and Die Manufacturing, 3D Printing, Rapid Prototyping.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

SEA-LECT Plastics serves as a comprehensive turn-key supplier for contract manufacturing, providing various manufacturing options, including contract injection molding, assembly, and secondary operations.

Throughout the complete contract injection molding manufacturing life cycle, spanning pre-production, manufacturing, and delivery to end-customers, SEA-LECT Plastics takes charge. For injection molded plastic products, this involves designing a portion or a complete assembly, completing injection molds, running pre-production samples, and managing the manufacturing process through distribution. The company boasts a dedicated in-house injection mold tooling division capable of creating new molds and repairing older molds for new creations. With design engineers and molding experts on board, SEA-LECT Plastics brings products to life and troubleshoots designs to enhance cost-effectiveness. The plastic contract injection molding company can source new materials at optimal prices, offering suggestions on the best plastic resin for new products. Additionally, SEA-LECT Plastics provides packaging and shipping services globally, accommodating contract injection molding partners’ needs, whether in bulk or as small as a single piece.


WordPress website

Type of Business: Plastic Contract Injection Molding Manufacturer.
Location: Dongguan, Guangdong province, China.
History: Over 20 years.
Key Products & Service: Plastic Mold Manufacturing, Plastic Contract Injection Moulding, 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 contract injection molding factory with over two decades of expertise, is dedicated to rapid prototyping, plastic contract injection moulding production, and plastic mold fabrication. Our focus lies in custom plastic injection molding parts across diverse sectors, including electronics, automotive, consumer products, and the medical industry. With a remarkable proficiency in producing plastic injection molded products with precise tolerances and exceptionally high surface finishes, Sungplastic stands out in the plastic injection moulding industry.

As premier plastic contract injection molding products 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 contract injection molding knowledge and production experience, Sungplastic has proudly served numerous countries and established brands worldwide as a trusted plastic injection moulding fabricator.

4.Ferriot Inc.

WordPress website

Type of Business: Contract Injection Molding Manufacturer.
Location: Ohio, USA.
History: Since 1929.
Key Products & Service: Custom Contract Injection Molding, Part & Mold Design and Engineering, Custom Mold Making, Insert Molding, Over Molding.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Ferriot Inc. stands as a comprehensive custom injection molder of engineered resins, offering full-service solutions. Established in 1929 and privately held, the company boasts over 150 employees, including seasoned engineers and skilled technicians in the manufacturing and injection molding industry.

Functioning as a contract injection molding manufacturer, Ferriot excels in engineering, product design, custom molding, sub- and finished assembly, ensuring on-time delivery of components and finished products for major industries. This contract injection molding products supplier efficiently streamlines the entire manufacturing process, covering supply-line development, process qualification, product testing, and final assembly, up to drop shipping.

In particular, Ferriot Inc. specializes in custom contract injection molding manufacturing for the medical industry, providing enclosures and encasements for medical equipment. Their expertise extends to unique contract injection molding solutions for consumer products, medical products, electronics, business machines, industrial applications, and more.

With a mobile and adaptable manufacturing approach, Ferriot tailors on-time production to diverse needs, including short runs on assemblies with multiple parts.

5.EVCO Plastics

WordPress website

Type of Business: Contract Injection Molding Service Provider.
Location: WI, USA.
History: Since 1964.
Key Products & Service: Contract Injection Molding, Tooling & Molding Building, Prototyping, Metal to Plastic Conversion.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

EVCO offers contract injection molding services to produce customized parts tailored to your specifications–engineered, designed, and built according to your requirements. Their contract injection molding solutions cater to a range of industries, including plastic injection molding products, large parts, medical and healthcare, consumer products, plastic packaging, and industrial products.

Outsourcing your product to a specialized contract injection molding manufacturer like EVCO brings several advantages, including reduced material and overall manufacturing costs, increased productivity and flexibility, and an integrated and streamlined process.

Our teams uncover ways to optimize the manufacturing process and identify state-of-the-art technology, robotics and automation to streamline processes, increase efficiencies and actualize cost savings. Investing in and applying these innovations helps our customers achieve a competitive advantage and profitable results time and time again.

6.Mack Molding Co.

WordPress website

Type of Business: Contract Injection Moulding Solution.
Location: USA.
History: Since 1920.
Key Products & Service: Tailored Contract Injection Molding, Design/Development, Prototyping, Plastic Injection Molding, Finishing, Sheet Metal Fabrication, Machining, Contract Manufacturing.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Though Mack initially began in 1920 as a custom injection molder, it has evolved into a comprehensive bespoke contract injection molding manufacturer. What started with simple sub-assemblies has expanded to encompass intricate mechanical/electronic sub-assemblies and fully finished products, including Class III PMA medical devices. Behind the assembly lines, Mack has established essential support systems, covering regulatory compliance, quality assurance, supply management, test development, data tracking, inventory services, and more.

Serving as an extension of your manufacturing arm, Mack offers an integrated approach to product manufacturing that spans from product design and development to rapid prototyping, tooling, custom injection molding, sheet metal fabrication, machining, component sourcing and management, sub-assembled components, total product assembly, and distribution.

The strength of Mack’s vertical integration lies in the flexibility it provides. Clients can choose the services that align with their specific contract injection molding manufacturing model. Whether opting for a full manufacturing partnership to leverage all available tailored contract injection molding services or selecting specific services, the choices are tailored to the unique needs of each customer.

7.Bemis Manufacturing Company

WordPress website

Type of Business: Bespoke Contract Injection Molding.
Location: USA.
History: Since 1901.
Key Products & Service: Tailored Contract Injection Moulding, Engineering, Injection Molding, Large Part Molding, Insert Injection Molding, Co-Injection Molding, Overmolding.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

As pioneers in contract injection molding technology, they possess the capability to integrate multiple processes, creating solutions that surpass the reach of traditional molders. Over their extensive experience in adapting and developing innovative methods to advance the customers’ objectives, they have emerged as industry trailblazers, consistently delivering molded plastic parts of superior quality and performance.

Situated in Sheboygan Falls, Wisconsin, the Bemis Manufacturing Company stands as an American manufacturing entity renowned for its toilet seat products. Beyond this, Bemis manufactures a diverse range of products, including plastic lawn, commercial, and indoor furniture, suction canisters, sharps containers, fluid management systems, gas caps, gauges, and various extrusion and injection molded plastic components for notable companies like John Deere and Whirlpool Corporation. Notably, the company is a pioneer in co-injection molding, a process involving the injection of virgin resin with scrap plastic.

Bemis Contract Group is committed to helping leading brands maintain their edge through innovation, tenacity, and proven expertise in custom plastic contract injection molding, delivering enhanced value to its customers.

8.Natech Plastics

WordPress website

Type of Business: Precise Contract Injection Molding.
Location: NY, USA.
History: Over 20 years.
Key Products & Service: Design & Development, Mold Making, Customized Injection Molding, Contract Manufacturing.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Natech Plastics, a certified ISO 13485 and 9001 company, provides a comprehensive range of services, including custom injection molding, contract injection molding manufacturing, and product design and development. Their expertise extends to scientific molding services and design for manufacture, ensuring stable processing and streamlined schedules for intricate and crucial-use plastic parts. The small plastic parts manufacturer offers various product finishing techniques, including banding, hot stamping, silk screening, pad printing, conductive painting, cosmetic painting, metalizing, and plating.

As a premium contract injection molding fabricator, Natech excels in the fields of packaging, medical, and diagnostics. The company specializes in automated and semi-automated injection-molded component and assembly manufacturing, handling volumes ranging from medium to high. The engineers at this precise plastic parts manufacturer bring valuable experience in mold qualifications for medical IQ/OQ/PQ, high-volume automation in consumer packaging, and the use of engineering-grade resins and ultra-polymers in electronics.

9.PTI Engineered Plastics, Inc.

WordPress website

Type of Business: Plastic Contract Injection Molding Components Production.
Location: Michigan, USA.
History: Since 1984.
Key Products & Service: Plastic Contract Injection Molding, Prototype Creation, Low Volume Molding, Insert Molding, Overmolding, Cleanroom Molding, Scientific Molding, High Temperature Molding.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

PTI Engineered Plastics stands as a leading American injection molder and supplier of plastic components contract injection molding. As a versatile service provider in plastic contract injection molding, PTI serves the medical, defense/aerospace, and commercial/consumer products sectors. Their custom injection moulding services span from low to mid-volume quantities, covering projects ranging from simple to intricate, including prototypes to full-scale production, with a commitment to delivering high-quality molded plastic products.

Located in their state-of-the-art 160,000 square foot manufacturing facility, PTI features 4,000 square feet of ISO Class 8 Cleanroom and an additional 5,000 square feet of controlled environment. These areas provide comprehensive customized contract injection molding services, assembly, and packaging services. PTI goes beyond standard molding services by offering value-added services such as ultrasonic welding, EMI shielding, pad printing, laser marking, and more. Their expertise extends to IQ/OQ/PQ validation protocol and the Production Part Approval Process (PPAP), ensuring stringent quality standards are maintained throughout the entire contract injection molding processing process.

10.Flambeau, Inc.

WordPress website

Type of Business: Tailored Contract Injection Molding.
Location: USA.
History: Since 1947.
Key Products & Service: Contract Molding & Assembly, Injection Molding, Blow Molding, Tool Design and Fabrication, Product Design, Prototype Manufacturing.
Materials:ABS, PP, PE, PMMA, PA, PS, PC, PEEK, PVC, PET and more.

Company Background and Advantage:

Flambeau specializes in custom plastic manufacturing, producing injection-molded components and blow-molded parts, components, and assemblies using a diverse range of materials.

As a excellent customized contract injection molding supplier, they provide critical products and services in areas such as medical devices, transportation, military equipment, healthcare supplies, filtration products, firearms, and construction and agricultural equipment.

Flambeau distinguishes itself through innovative designs, engineering expertise, efficient program management, and cutting-edge contract injection molding manufacturing capabilities. This not only alleviates concerns for our customers but also shortens manufacturing timelines to meet crucial launch dates. Moreover, Flambeau offers a broad selection of stock products that are customizable, tailored to meet unique requirements, and expedite the process of bringing customer products to market.


Above, we have introduced ten exceptional contract injection molding manufacturers who have accumulated years of experience in custom plastic component production. With their skilled and professional engineering teams, they are well-equipped to meet your contract injection molding needs.

If you are in need of contract injection molding services, please don’t hesitate to contact us. We are here to address any inquiries you may have. Our contract injection molding solutions are tailored to your specific requirements, setting us apart from the rest. What’s more, our commitment is to deliver high-quality bespoke injection molded plastic products.

Trust us to bring your idea to reality. Reach out to us today for all your contract injection molding needs.

Get a free quote and design analysis today.

We’ll reply to you within 6 working hours.
We respect your privacy.

+86 139 2927 4777 (WhatsApp, Wechat)