Proto Plastics was formed in 1969 as a plastic injection molder and mold builder serving a small group of customers in the business equipment market. Today, we are a full-service contract manufacturer of custom plastic injection molded parts and assemblies, specializing in technically demanding, close tolerance parts required in a wide variety of industries.Proto Plastics has experienced tooling design engineers that can work with you to ensure your part or product design is ready to be manufactured or molded.