# Top 41 Plastics Manufacturing companies in Michigan

Tamtam tracks 41 Plastics Manufacturing companies headquartered in Michigan. This list ranks all of them by number of employees on LinkedIn, led by Plastipak, Formosa Plastics Corporation, U.S.A. and RESRG Automotive. Their median headcount is 148. Half of them were founded in 1979 or later. The most common headquarters are Grand Rapids (3) and Chesterfield (2).

The companies listed operate in plastics manufacturing in Michigan. They are mostly mid-sized to large firms, with a focus on producing various plastic components and materials for diverse industries. Plastipak is a global leader in rigid plastic containers, while Formosa Plastics Corporation, U.S.A. supplies plastic resins and petrochemicals. RESRG Automotive manufactures exterior systems for car manufacturers, and Lacks Enterprises specializes in automotive parts. INOAC USA, Inc. is known for polyurethane technology, and Royal Technologies Corp. provides innovative plastic solutions.

A notable pattern is the concentration of companies founded in the mid to late 20th century, with many established between the 1940s and 1980s. These companies primarily serve the automotive, packaging, and consumer product sectors, indicating a strong historical link between plastics manufacturing in Michigan and its established industrial base.

🇺🇸 Michigan · 41 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Plastipak](https://www.tamtam.ai/c/plastipak) (plastipak.com)<br>A global leader in designing and manufacturing high-quality rigid plastic containers for various industries worldwide, with a focus on innovation and sustainability | Plastics Manufacturing | 🇺🇸 Plymouth | 3,534 | 1967 |
| 2 | [Formosa Plastics Corporation, U.S.A.](https://www.tamtam.ai/c/formosa-plastics-corporation-u-s-a) (fpcusa.com)<br>A vertically-integrated supplier of plastic resins and petrochemicals, with over 20 production units across five business units | Plastics Manufacturing | 🇺🇸 Livingston Township | 2,480 | 1978 |
| 3 | [RESRG Automotive](https://www.tamtam.ai/c/resrg-automotive) (resrgautomotive.com)<br>Manufacture coated exterior systems and components for leading automotive manufacturers with extensive global production and skilled workforce. | Plastics Manufacturing | 🇺🇸 | 1,409 | 1948 |
| 4 | [Lacks Enterprises](https://www.tamtam.ai/c/lacks-enterprises) (lacksenterprises.com)<br>A family-owned manufacturer of innovative and high-quality automobile parts, known for its detail-focused drive and global industry experience since 1961 | Plastics Manufacturing | 🇺🇸 Kentwood | 735 | 1961 |
| 5 | [INOAC USA, Inc.](https://www.tamtam.ai/c/inoac-usa-inc) (inoacusa.com)<br>INOAC is a leading innovator in polyurethane technology, offering materials for various industries and partnering with companies to differentiate their brands | Plastics Manufacturing | 🇺🇸 Troy | 718 | 1926 |
| 6 | [Royal Technologies Corp.](https://www.tamtam.ai/c/royal-technologies-corp) (royaltechnologies.com)<br>Advanced engineering and manufacturing company providing innovative plastic solutions to industries including automotive, furniture, and consumer products Trusted by customers for reliable service | Plastics Manufacturing | 🇺🇸 Hudsonville | 614 | 1987 |
| 7 | [Revere Plastics Systems, LLC](https://www.tamtam.ai/c/revere-plastics-systems-llc) (revereplasticssystems.com)<br>A Michigan-based company with 50 years of experience in plastics manufacturing, offering innovative solutions in design, injection molding, assembly, and testing | Plastics Manufacturing | 🇺🇸 Novi | 489 | 1957 |
| 8 | [Cascade Engineering](https://www.tamtam.ai/c/cascade-engineering) (cascadeng.com)<br>Manufacturer and marketer with expertise in large part injection molding Offers products and consulting services across various industries, prioritizing sustainability and innovation | Plastics Manufacturing | 🇺🇸 Grand Rapids | 466 | 1973 |
| 9 | [DME Company](https://www.tamtam.ai/c/dme-company) (dme.net)<br>Global supplier of mold technologies and equipment supplies, offering expertise, logistics, and support for customers worldwide to achieve success in mold making and molding processes | Plastics Manufacturing | 🇺🇸 Madison Heights | 341 | 1942 |
| 10 | [PCS Company](https://www.tamtam.ai/c/pcs-company) (pcs-company.com)<br>A leading supplier of mold bases, components, and hot runner products for plastic and die cast industries, emphasizing quality, innovation, and customer service | Plastics Manufacturing | 🇺🇸 Fraser | 311 | 1960 |
| 11 | [Petoskey Plastics](https://www.tamtam.ai/c/petoskey-plastics) (petoskeyplastics.com)<br>An industry leader in manufacturing blown plastic film and bags for various industries, with a focus on sustainability and recycling | Plastics Manufacturing | 🇺🇸 Petoskey | 283 | 1970 |
| 12 | [Uniform Color](https://www.tamtam.ai/c/uniform-color) (uniformcolor.com)<br>Global manufacturer of custom color and additive masterbatch solids for thermoplastics, specializing in polyolefins and styrenics for automotive, furniture, packaging, and industrial markets | Plastics Manufacturing | 🇺🇸 Holland | 229 |  |
| 13 | [Plastics News](https://www.tamtam.ai/c/plastics-news) (plasticsnews.com)<br>A trade newspaper covering global news for the plastics industry, focusing on commercial, financial, legislative, and market developments affecting North American manufacturers | Plastics Manufacturing | 🇺🇸 Detroit | 195 | 1989 |
| 14 | [PTI Engineered Plastics](https://www.tamtam.ai/c/pti-engineered-plastics) (teampti.com)<br>Innovative plastic injection molding company with expertise in medical, defense, aerospace, and consumer products Offers design, prototyping, and production services with FDA and ISO certifications | Plastics Manufacturing | 🇺🇸 Macomb | 178 | 1984 |
| 15 | [INCOE Corporation](https://www.tamtam.ai/c/incoe-corporation) (incoe.com)<br>A leading manufacturer of hot runner systems since 1958, driving advancements in plastic injection molding productivity and cost savings worldwide | Plastics Manufacturing | 🇺🇸 Auburn Hills | 178 |  |
| 16 | [Nissha Eimo Technologies](https://www.tamtam.ai/c/nissha-eimo-technologies) (eimotech.com)<br>A subsidiary of Nissha USA specializing in high-quality plastic decoration and medical molding/assembly in a cleanroom setting for various industries | Plastics Manufacturing | 🇺🇸 Vicksburg | 178 | 1969 |
| 17 | [RJG, Inc.](https://www.tamtam.ai/c/rjg-inc) (rjginc.com)<br>Providing expertise in plastic injection molding to drive financial success, RJG empowers the industry through consulting, training, and technology | Plastics Manufacturing | 🇺🇸 Traverse City | 169 | 1985 |
| 18 | [CS Manufacturing Inc.](https://www.tamtam.ai/c/cs-manufacturing-inc) (csmanufacturing.us)<br>A full-service injection molder offering total program management with a world-class manufacturing facility featuring automation, assembly cells, quality lab, and warehouse | Plastics Manufacturing | 🇺🇸 Cedar Springs | 165 | 1986 |
| 19 | [CIE USA - Century Plastics LLC](https://www.tamtam.ai/c/cie-usa-century-plastics-llc) (cieautomotive.com)<br>A division of a global enterprise, CIE-Century Plastics provides components and sub-assemblies for the automotive market, emphasizing innovation and efficiency | Plastics Manufacturing | 🇺🇸 Shelby Township | 157 | 1999 |
| 20 | [Chase Plastic Services, Inc.](https://www.tamtam.ai/c/chase-plastic-services-inc) (chaseplastics.com)<br>A leading thermoplastics distributor offering a vast selection of materials, value-added services, and dedicated support to help customers boost efficiency and profitability | Plastics Manufacturing | 🇺🇸 Clarkston | 156 | 1992 |
| 21 | [Commercial Tool Group: Commercial Tool & Die, Inc., CG Automation & Fixture, Inc., CG Plastics, Inc.](https://www.tamtam.ai/c/commercial-tool-group-commercial-tool-and-die-inc-cg-automation-and-fixture-inc) (commercialtoolgroup.com)<br>A group providing full-service solutions in mold building, down-line equipment manufacturing, injection molding, and robotic automation for various industries | Plastics Manufacturing | 🇺🇸 Grand Rapids | 148 | 1953 |
| 22 | [Stone Plastics and Manufacturing, Inc.](https://www.tamtam.ai/c/stone-plastics-and-manufacturing-inc) (stoneplasticsmfg.com)<br>Custom injection molder and assembler of plastics parts for automotive, building, and consumer industries, providing innovative solutions to reduce costs | Plastics Manufacturing | 🇺🇸 Zeeland | 110 | 1999 |
| 23 | [Erwin Quarder Inc.](https://www.tamtam.ai/c/erwin-quarder-inc) (quarder.de)<br>Manufacturer of high precision plastic injection molded parts for automotive and medical industries, utilizing sophisticated automation and engineering design for Tier I facilities globally | Plastics Manufacturing | 🇺🇸 Grand Rapids | 91 | 1998 |
| 24 | [Ironwood Plastics, Inc.](https://www.tamtam.ai/c/ironwood-plastics-inc) (ironwood.com)<br>A plastic injection molding company specializing in close tolerance products for industries such as Defense, Medical, Electronics, and Automotive | Plastics Manufacturing | 🇺🇸 Ironwood | 78 | 1979 |
| 25 | [MMI Engineered Solutions, Inc.](https://www.tamtam.ai/c/mmi-engineered-solutions-inc) (mmi-es.com)<br>Engineering company specializing in tooling and manufacturing, applying innovation to create advantages and deliver performance through advanced technology and composite solutions | Plastics Manufacturing | 🇺🇸 Saline | 76 | 1983 |
| 26 | [Kingfa Sci. & Tech. USA](https://www.tamtam.ai/c/kingfa-sci-and-tech-usa) (kingfa.com)<br>A global leader in the chemical new-material industry offering a wide range of products with intellectual property rights, focused on high performance engineering plastics | Plastics Manufacturing | 🇺🇸 Canton | 72 | 2015 |
| 27 | [Grand Traverse Plastics](https://www.tamtam.ai/c/grand-traverse-plastics) (gtpplastics.com)<br>A leading provider of engineered plastic solutions for production and prototypes, offering design, material expertise, tooling management, injection molding, and automation services | Plastics Manufacturing | 🇺🇸 Williamsburg | 60 | 1981 |
| 28 | [West Michigan Molding](https://www.tamtam.ai/c/west-michigan-molding) (wmmolding.com)<br>A company focused on producing high-quality parts using innovative techniques, fostering a positive work environment, and meeting financial responsibilities to employees | Plastics Manufacturing | 🇺🇸 Grand Haven | 57 |  |
| 29 | [Wilko Plastics Inc](https://www.tamtam.ai/c/wilko-plastics-inc) (wilkoplastics.com)<br>Custom injection molder specializing in producing plastic parts | Plastics Manufacturing | 🇺🇸 Romeo | 53 | 1976 |
| 30 | [Davalor Mold Company LLC](https://www.tamtam.ai/c/davalor-mold-company-llc) (davalor.com)<br>A full-service supplier specializing in plastic injection mold construction, prototype development, and high volume production injection molding for nearly forty years | Plastics Manufacturing | 🇺🇸 Chesterfield | 42 | 1979 |
| 31 | [21st Century Plastics Corp.](https://www.tamtam.ai/c/21st-century-plastics-corp) (21stcpc.com)<br>A custom thermoplastic injection molder manufacturing a variety of products including seating, industrial, construction, automotive parts, and fire sprinkler components | Plastics Manufacturing | 🇺🇸 Potterville | 38 | 1988 |
| 32 | [Anderson Technologies](https://www.tamtam.ai/c/anderson-technologies) (andtec.com)<br>A leading plastic injection molding and contract manufacturing company specializing in product development, design, automation, and lean manufacturing processes with extensive experience | Plastics Manufacturing | 🇺🇸 Grand Haven | 38 | 1990 |
| 33 | [Sierra Plastics](https://www.tamtam.ai/c/sierra-plastics) (geminigroup.net)<br>Multi-location supplier of engineered plastic and metal products in the USA and Mexico, offering financial stability and vertical integration | Plastics Manufacturing | 🇺🇸 Bad Axe | 33 |  |
| 34 | [AIM Plastics](https://www.tamtam.ai/c/aim-plastics) (medbioinc.com)<br>A full-service custom plastic injection molding supplier specializing in medical manufacturing, offering design assistance, advanced molding technologies, and cleanroom manufacturing capabilities | Plastics Manufacturing | 🇺🇸 Clinton twp. | 30 | 1988 |
| 35 | [Plastic Systems, LLC](https://www.tamtam.ai/c/plastic-systems-llc) (ww1.plastic-systems.net)<br>A company specializing in plastic injection molding and tool manufacturing, with multiple facilities across Michigan, Ohio, and Texas, employing 340 associates | Plastics Manufacturing | 🇺🇸 Romeo | 19 | 2001 |
| 36 | [Midwest Rubber Company](https://www.tamtam.ai/c/midwest-rubber-company) (mwrco.com)<br>A leader in rubber and plastics engineering, design and manufacturing, offering cost-saving solutions for various industries with a focus on innovation and tailored solutions | Plastics Manufacturing | 🇺🇸 Deckerville | 18 | 1946 |
| 37 | [INMAR SOLUTIONS](https://www.tamtam.ai/c/inmar-solutions) (bit.ly)<br>An advanced product development firm specializing in mechatronics and electromechanical systems, utilizing high performance polymer composite materials for commercial success | Plastics Manufacturing | 🇺🇸 Chesterfield | 17 | 2008 |
| 38 | [AIC EQUIP. & PLASTI-CO EQUIP.](https://www.tamtam.ai/c/aic-equip-and-plasti-co-equip) (aic-plastico.com)<br>Specializing in plastics processing equipment and manufacturing components, providing engineering solutions and exceptional customer service since 1974 in Michigan | Plastics Manufacturing | 🇺🇸 Wixom | 15 | 1974 |
| 39 | [AccroSeal®](https://www.tamtam.ai/c/accroseal) (accroseal.com)<br>Specializing in machining custom polymer components since 1977, we offer expertise in producing high quality plastic parts with a wide range of materials and sizes | Plastics Manufacturing | 🇺🇸 Vicksburg | 14 | 1977 |
| 40 | [PRP - Precision Rubber Products Italia](https://www.tamtam.ai/c/prp-precision-rubber-products-italia) (prpitalia.it)<br>Designing sealing solutions for various applications based on over 40 years of experience, prioritizing safety and reliability to make customers' professional lives easier | Plastics Manufacturing | 🇺🇸 Basiano | 5 | 1971 |
| 41 | [Innovative Engineering of Michigan, Inc.](https://www.tamtam.ai/c/innovative-engineering-of-michigan-inc) (innovative-urethane.com)<br>Custom molder specializing in polyurethane, silicone, and resin infused composites for rapid prototyping and production purposes | Plastics Manufacturing | 🇺🇸 Lansing | 1 | 1986 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

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Source: https://www.tamtam.ai/l/plastics-manufacturing-companies-michigan