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| Table of Contents |
| 1. Introduction |
| 2. Selection Criteria |
| 3. Top 10 Injection Mold Manufacturers in USA |
4. Comparison Table |
| 5. Why Choose Alpine Mold for Your Projects |
| 6. Conclusion |
Finding the right injection mold manufacturer in the USA is essential for ensuring product quality, cost efficiency, and on-time delivery. Whether you are producing complex automotive components, high-precision medical devices, or durable consumer products, partnering with a reliable supplier can make or break your project.
In this guide, we list the Top 10 Injection Mold Manufacturers in the USA (2025 Update), based on their manufacturing capabilities, certifications, industry experience, and customer feedback.
To compile this list, we evaluated companies based on:
Production capabilities – equipment, technology, and tooling capacity
Certifications – ISO 9001, IATF 16949, ISO 13485, etc.
Industry experience – automotive, medical, electronics, consumer products
Track record – quality consistency, on-time delivery, and customer satisfaction
Location: Maple Plain, Minnesota
Company type: Digital manufacturing and rapid prototyping company
Year founded: 1999
Number of employees: ~2,500
Main products: Injection molds, custom plastic parts, rapid prototyping, CNC machining, 3D printing
Company introduction:
Protolabs is widely recognized as one of the fastest digital manufacturers in the USA. They specialize in producing custom injection molds and parts with very short lead times, making them a top choice for prototyping and low- to mid-volume production. With advanced automation and online quoting systems, Protolabs serves industries such as aerospace, medical devices, automotive, and consumer electronics.
Website: www.protolabs.com
Location: New Freedom, Pennsylvania
Company type: Employee-owned custom injection molding company
Year founded: 1946
Number of employees: ~200
Main products: Injection molds, medical device components, custom plastic parts, mold design
Company introduction:
Crescent Industries is an employee-owned company with a strong reputation in medical device injection molding. Certified with ISO 13485, they are experts in cleanroom molding, assembly, and secondary operations. Their vertically integrated services—from design and tooling to molding and packaging—make them a trusted partner for healthcare and life sciences companies.
Website: www.crescentind.com
Location: DeForest, Wisconsin
Company type: Global custom injection molding company
Year founded: 1964
Number of employees: ~1,000
Main products: High-volume injection molded parts, multi-cavity molds, automotive components, packaging products
Company introduction:
EVCO Plastics is one of the largest family-owned custom molders in the world, with facilities in the USA, Mexico, and China. They specialize in large-scale, high-volume production and are well known in the automotive, packaging, medical, and industrial markets. Their capabilities include multi-cavity molds, gas-assisted molding, and advanced automation.
Website: www.evcoplastics.com
Location: Hartland, Wisconsin
Company type: Digital manufacturing and custom injection molding provider
Year founded: 1984
Number of employees: ~500
Main products: Custom injection molds, prototype parts, additive manufacturing, CNC machining
Company introduction:
Fathom focuses on combining traditional injection molding with modern digital manufacturing technologies. They offer rapid turnaround for both prototypes and production parts, making them a strong partner for industries requiring innovation and speed-to-market. Their customer base spans automotive, electronics, and industrial sectors.
Website: www.fathommfg.com
Location: Arlington, Vermont
Company type: Contract manufacturer and injection molding company
Year founded: 1920
Number of employees: ~1,000
Main products: Medical device housings, industrial components, electronic enclosures, custom molds
Company introduction:
Mack Molding is a century-old leader in custom plastic injection molding and contract manufacturing. With a focus on the medical, industrial, and commercial sectors, Mack offers design, prototyping, molding, assembly, and supply chain management. Their strong engineering support and high-volume production capabilities make them a go-to partner for large corporations.
Website: www.mack.com
Location: Corry, Pennsylvania
Company type: Custom injection molding and sealing solutions provider
Year founded: 1972
Number of employees: ~300
Main products: Automotive parts, HVAC components, insert-molded and overmolded parts
Company introduction:
Viking Plastics specializes in precision injection molding for the automotive and HVAC industries. Known for their insert molding and overmolding expertise, they deliver tight-tolerance components used by leading OEMs and Tier 1 suppliers. Their focus on lean manufacturing and quality control has earned them long-term partnerships worldwide.
Website: www.vikingplastics.com
Location: Vancouver, Washington
Company type: Family-owned custom plastic injection molding company
Year founded: 1971
Number of employees: ~50
Main products: Consumer product molds, industrial components, custom plastic parts
Company introduction:
Rex Plastics is a family-owned business that prides itself on flexibility and customer service. They provide tooling and molding for both low- and high-volume production runs. With an emphasis on sustainability, Rex Plastics incorporates eco-friendly practices and materials into their production processes, serving clients in consumer goods, electronics, and industrial applications.
Website: www.rexplastics.com
Location: Clinton Township, Michigan
Company type: Custom injection molding and mold making company
Year founded: 1996
Number of employees: ~200
Main products: Custom injection molds, rapid tooling, precision molded parts
Company introduction:
Xcentric Mold & Engineering is known for its quick-turn mold making and injection molding services. With in-house design, tooling, and molding capabilities, they provide customers with end-to-end solutions. They are especially popular for prototype tooling and short-run production, helping companies test and validate parts before scaling up.
Website: www.xcentricmold.com
Location: Kansas City, Missouri
Company type: Custom mold design and injection molding service provider
Year founded: 1976
Number of employees: ~100
Main products: Precision molds, medical device housings, consumer product parts
Company introduction:
Plastic Design Company has over 45 years of experience in mold design and injection molding. They focus on high-precision applications, particularly in medical devices and consumer products. Their services include design engineering, mold building, injection molding, and value-added assembly.
Website: www.plasticdesign.com
Location: Shenzhen, China (Serving USA market)
Company type: Custom injection mold and die casting mold manufacturer
Year founded: 2002
Number of employees: ~200+
Main products: Injection molds, die casting molds, custom plastic and metal parts
Company introduction:
Although not based in the USA, Alpine Mold is a trusted mold manufacturing partner for many American companies. With over 10,000 successful projects completed since 2002, Alpine Mold specializes in DFM analysis, Mold Flow simulation, precision mold making, and injection molding & two-shot molding production. Their expertise spans automotive, medical, electronics, and consumer products. By combining ±0.01mm precision machining with a one-stop service model, Alpine Mold helps international clients reduce lead times, lower costs, and ensure product quality.
Website: www.alpine-mold.com
Rank | Company | Location | Founded | Core Industries | Key Strengths | Certifications |
1 | Protolabs | Maple Plain, Minnesota | 1999 | Medical, Aerospace, Consumer | Rapid prototyping, short lead time | ISO 9001 |
2 | Crescent Industries | New Freedom, Pennsylvania | 1946 | Medical, Electronics | Employee-owned, ISO 13485 medical expertise | ISO 13485 |
3 | EVCO Plastics | DeForest, Wisconsin | 1964 | Automotive, Packaging, Industrial | Global facilities, high-volume production | ISO 9001, IATF 16949 |
4 | Fathom | Hartland, Wisconsin | 1984 | Automotive, Electronics | Digital manufacturing, complex parts | ISO 9001 |
5 | Mack Molding | Arlington, Vermont | 1920 | Medical, Industrial, Commercial | Contract manufacturing, full-service | ISO 9001, ISO 13485 |
6 | Viking Plastics | Corry, Pennsylvania | 1972 | Automotive, HVAC | Insert molding, overmolding expertise | ISO 9001, IATF 16949 |
7 | Rex Plastics | Vancouver, Washington | 1971 | Consumer Products, Industrial | Flexible production, sustainability | ISO 9001 |
8 | Xcentric Mold & Engineering | Clinton Township, Michigan | 1996 | Automotive, Medical, Electronics | Fast-turn molds, in-house tooling | ISO 9001 |
9 | Plastic Design Company | Kansas City, Missouri | 1976 | Medical, Consumer | High-precision mold design | ISO 9001 |
10 | Alpine Mold Engineering Ltd | Shenzhen, China (Serving USA) | 2002 | Automotive, Medical, Electronics, Consumer | ±0.01mm precision, DFM, Mold Flow, one-stop service | ISO 9001, IATF 16949 |
Founded in 2002 – Over 23 years in mold manufacturing
10,000+ molds delivered – Proven track record in global markets
Expert team – 25 engineers, including 6 with 20+ years of experience
Precision – Mold tolerances up to ±0.01mm
One-stop service – From DFM to final production
Contact Alpine Mold today for a free consultation and see how we can turn your product ideas into reality.
Choosing the right injection mold manufacturer in the USA requires balancing cost, lead time, and quality. The companies listed here have proven expertise across multiple industries, making them reliable partners for your next project.
If you’re looking for a high-precision mold supplier with international experience, Alpine Mold offers the expertise and resources to meet your needs.
