Colonial Engineering, Inc. is a full-service custom injection-molder with operations in Portage and Benton Harbor, MI. Colonial also manufactures plastic valves for the industrial PVF, process piping, water-treatment, pool, plumbing and irrigation markets.
Colonial Engineering, Inc.
6400 Corporate Ave
Portage, MI 49002
6400 Corporate Ave
Portage, MI 49002
Customer Service (toll-free):
800-374-0234
800-374-0234
National order fax (toll-free):
866-879-5982
or 269-323-0630
