Injection molding has long been a cornerstone of American manufacturing, shaping everything from car parts to medical devices with precision and efficiency. The United States hosts hundreds of companies excelling in this field, but a select few stand out for their innovation, scale, and reliability. Whether you’re a business owner seeking a manufacturing partner or simply curious about the industry, this list of injection molding companies in the USA offers a glimpse into the best of the best. From global giants to specialized innovators, these firms represent the cutting edge of plastic production in 2025.
1. Berry Global, Inc.
Location: Evansville, Indiana
Founded: 1967
Berry Global isn’t just a player in injection molding—it’s a titan. As a Fortune 300 company, this Evansville-based powerhouse employs over 40,000 people across 250+ global locations. Specializing in plastic packaging and engineered products, Berry serves industries like consumer goods, healthcare, and industrial manufacturing. Their expertise in injection molding ensures high-quality packaging solutions, from bottles to containers, making them a go-to for businesses worldwide. With decades of experience, Berry Global proves size and innovation can go hand in hand.
2. Protolabs
Location: Maple Plain, Minnesota
Founded: 1999
Speed is Protolabs’ superpower. Based in Minnesota, this company has redefined injection molding with its digital manufacturing approach. Offering rapid prototyping and on-demand production, Protolabs can deliver parts in as little as one day thanks to its automated quoting and production systems. Serving industries like medical, automotive, and aerospace, they excel in plastic injection molding, liquid silicone rubber molding, and insert molding. For businesses needing fast turnarounds without compromising quality, Protolabs is a game-changer.
3. Xometry
Location: Washington DC Metro / Maryland
Founded: 2015
Xometry brings the future to injection molding with its AI-driven platform. Operating out of Maryland, this company connects customers to a global network of over 10,000 manufacturing partners. Their services include custom plastic injection molding, surface finishing, and precision processing, catering to aerospace, automotive, and medical sectors. Founded in 2015, Xometry’s rapid rise reflects its ability to blend technology with manufacturing, offering scalable solutions from prototypes to full production runs.
4. Plastek Industries
Location: Erie, Pennsylvania
Founded: 1956
Plastek Industries boasts one of the largest injection molding facilities in the U.S. Based in Erie, Pennsylvania, with 850 employees, they serve beauty, food and beverage, pharmaceutical, and packaging markets. Operating across four countries, Plastek excels in high-volume production of precision plastic components. Their decades-long expertise and global reach make them a powerhouse for businesses requiring consistent, large-scale output.
5. Tessy Plastics
Location: Elbridge, New York
Founded: 1973
With over 50 years in the game, Tessy Plastics knows precision. Located in Elbridge, New York, this company specializes in complex and intricate injection-molded parts for medical, electronics, and packaging industries. Their long history reflects a commitment to quality and innovation, making them a trusted partner for businesses needing reliable, high-stakes components. Tessy’s experience ensures they can tackle even the toughest molding challenges.
6. Hi-Tech Mold & Engineering
Location: Rochester Hills, Michigan
Founded: 1980
Hi-Tech Mold & Engineering offers a full-service experience from its base in Rochester Hills, Michigan. As a family-owned business, they cover everything from concept design to final product launch, specializing in injection molding, insert molding, extrusion, and mold manufacturing. Serving automotive, appliance, and aerospace sectors, Hi-Tech combines personal attention with advanced capabilities. Their versatility makes them a standout in the Midwest’s manufacturing hub.
7. Ironwood Plastics Inc.
Location: Ironwood, Michigan
Founded: 1979
Ironwood Plastics brings a unique edge to the list. Based in Ironwood, Michigan, this company joined the Berkshire Hathaway family in 2010, backed by a management team with over 200 years of combined experience. They focus on insert molding and engineering-grade materials, delivering complex solutions for various industries. Ironwood’s blend of expertise and corporate support makes it a reliable choice for intricate projects.
8.Plastikon Industries
Location: Hayward, California
Founded: 1984
California’s Plastikon Industries shines on the West Coast. From Hayward, they provide plastic injection molding, mold design, and engineering services to medical, automotive, and electronics clients. Known for their global reputation, Plastikon combines advanced technology with a customer-first approach. Their work reflects the innovation and diversity of California’s manufacturing scene, making them a key player in the industry.
9. EVCO Plastics
Location: DeForest, Wisconsin
Founded: 1964
EVCO Plastics stands tall in the Midwest with 60 years of experience. Headquartered in DeForest, Wisconsin, they offer plastic injection molding, tool and mold building, and contract manufacturing. EVCO’s dedication to quality and customer needs has earned them a strong reputation across multiple sectors. Their longevity and adaptability make them a pillar of American manufacturing.
10. LexaMar Corp
Location: Boyne City, Michigan
Founded: 1996
LexaMar Corp thrives in Michigan’s automotive heartland. Based in Boyne City, this company employs 400 people and specializes in rubber and plastic injection molding for automotive exterior parts. Their focus on a single industry allows them to hone their craft, delivering precision components for vehicle manufacturers. LexaMar represents the strength of specialized manufacturing in the U.S.
11. Seaway Plastics Engineering
Location: Port Richey, Florida
Founded: 1974
Seaway Plastics Engineering brings flexibility to the table. Operating out of Port Richey, Florida, with 250,000 square feet across five facilities, they handle everything from small-batch prototypes to large-scale production. Their services include injection molding, rapid prototyping, and product design, catering to diverse needs. Seaway’s scale and adaptability make them a Southern standout.
12. Jones Plastic & Engineering
Location: Louisville, Kentucky
Founded: 1961
Rounding out the list is Jones Plastic & Engineering from Louisville, Kentucky. With 300 employees, they produce injection-molded parts for the automotive, packaging, electronics, and medical industries. Their broad market coverage and solid workforce highlight their role in the South’s manufacturing landscape. Jones offers a dependable option for businesses seeking variety and reliability.
Beyond the USA: Other Notable Players
While the U.S. boasts an impressive array of injection molding leaders, the global landscape offers additional standout companies worth exploring. One such firm is LanXin, a China-based innovator making waves in the industry with its comprehensive approach and international reach.
LanXin
Location: China
Founded: 1997
LanXin specializes in OEM/ODM injection molding, silicone rubber, and die-cutting products. Certified under ISO 14001, ISO 9001, ISO 13485, and IATF 16949, they partner with brands like FOXCONN and MOLEX. With six factories, LanXin delivers high-quality medical, automotive, and electronic components, offering end-to-end services from Custom Mold Design & Making Services to mass production. Their focus? Trust, creativity, and efficient customization.
Why These Companies Matter
The injection molding industry powers innovation worldwide, and these companies—U.S.-based or global—prove its strength. From Protolabs’ speed to LanXin’s all-in-one solutions, they meet diverse needs with precision and ingenuity. Whether you’re seeking a local partner or a global collaborator, this list highlights top talent driving the future of manufacturing. Which one stands out to you? Let us know in the comments!
