Founded in 1997, Superior Plastics is a 100% employee-owned manufacturer based in central Ohio, where its team has grown from a 5,000-square-foot leased site into a 104,000-square-foot production operation. The company is known for custom injection molding for customers in industries such as automotive and medical, with products shipped across several continents. Its quality system is ISO 9001:2015 certified.
ISO 9001:2015
Midwest MoldingMidwest Molding is a 100% employee-owned, ISO 9001-certified plastic injection molding company that turns concepts and tooling into custom parts and assemblies. Its 24/7 climate-controlled operation combines a 40,000-pound tool-and-die capacity with six-axis robotic automation and engineering support from prototype through full production. The company serves demanding applications across medical, automotive, industrial, and consumer markets.PLAIN CITY, OH
DEIMLING/jeliho Plastics, IncWhat began in Bill Deimling’s garage in 1976 is now a family-owned and operated plastics manufacturer in Amelia, Ohio. DEIMLING/jeliho Plastics is known for combining deep tooling experience with custom thermoplastic injection molding for customers across the Americas, Europe, and China. Its 108,000-square-foot facility and ISO 9001:2015 conformance reflect a long-running operation that has grown without losing its personal, hands-on character.AMELIA, OH
Doyle Shamrock IndustriesFamily-owned since Michael A. Doyle established it in 1975, Doyle Shamrock Industries grew from a one-person operation into a Holland, Ohio, manufacturer serving customers across the United States and beyond. The company specializes in custom plastic injection molding, with 200,000 square feet across two manufacturing locations and an off-site warehouse. Its work is backed by ISO 9001:2015 and ISO 14001:2015 certification.HOLLAND, OH
Royal Plastics, IncFounded in 1966, Royal Plastics is a Mentor, Ohio custom manufacturer of injection-molded plastic parts and contract-manufactured components for domestic and international customers. The closely held S-corporation has expanded from its Ohio operation into a U.S.-China manufacturing partnership, with in-house toolmaking, molding, assembly and testing supporting projects from prototype quantities through high-volume production. Royal Plastics employs 250 people domestically and 800 internationally, and operates under ISO 9001:2015 quality registration.MENTOR, OH