Engineered Polymers Corp (EPC) is a contract manufacturer specializing in large and complex plastic components.

Founded in 1939 as Minnesota Plastics in St. Paul, Minnesota, the company moved to Mora, Minnesota in 1960 and became Engineered Polymers Corp. EPC has the distinction of being one of the Midwest's first plastic injection molders. The company was also one of the pioneers in developing structural foam molding, both single-nozzle and multi-nozzle processes.

Our experienced, technically adept workforce draws on the pioneering culture of the company to create innovative solutions for the design of products, molds and processes to meet or exceed customer expectations.


This stage involves gathering all the necessary materials needed to make your product. Some factories provide materials and assembly; sometimes you will need to buy materials separately.


"Production run" means making a lot of one product at once. The factories listed under "production" can produce small and/or large quantities. The minimum order for a production run can vary from factory to factory (some have no minimum, some require a dozen, and some require up to 1,000 to be made at once)