Custom Plastics International

Custom Plastics International Ltd. (CPI) is a Canadian custom injection molding supplier established in Cobourg, Ontario, in 1965, specializing in the design, engineering, and manufacturing of complex injection molded parts. With over 60 years of expertise, CPI provides technical injection molding solutions, advanced engineering, and in-house tool shop services. The company operates automated injection molding machinery ranging from 35 to 500 tons, offering automated molding for mass production, value-added assembly, and metal-to-plastic part conversion. CPI serves diverse industries, including industrial equipment, health/medical, security/military, transportation, business equipment, and water, emphasizing high-level quality assurance and process-driven methodologies. They are dedicated to delivering on-time parts through flexible, responsive collaboration and sustainable company growth.