Custom Plastics International Limited

Founded in 1965 and located in Cobourg, Ontario, Canada, Custom Plastics International Limited (CPI) is a privately owned Canadian (CGP Registered and ISO 9001:2015 Certified) Custom Injection Molder with over 60 years of experience molding precision thermoplastic products.

CPI is not your typical commodity plastics manufacturer; we are your strategic partner in plastics innovation. We help design, engineer, build and manufacture complex injection molded parts – leveraging over 60 years of expertise to drive innovation.  We leverage our advanced engineering expertise and high level of quality control to deliver impactful technical solutions that drive customer success through flexible, responsive collaboration. 

The team at CPI is ‘Technical and Flexible’ with industry leading processes and controls, small business efficiency and attention to detail. Specialties include Plastic Injection Molding, Prototyping, 3D Printing, Assembly, Plastic design review, Tool Fabrication (in-house Tool Shop), and Tool Transfers.