Colonial Manufacturing LLC
Colonial Manufacturing LLC is a full-service custom injection-molder based in Portage and Benton Harbor, MI. With ISO 9001 2015 certification, they specialize in manufacturing plastic valves for various industries including industrial PVF, process piping, water-treatment, pool, plumbing, and irrigation markets.
Offering a wide range of products such as valves, unions, strainers, and specialty items, Colonial Engineering Inc. is committed to providing high-quality thermoplastic solutions. Their expertise in custom injection molding and extensive capabilities make them a trusted choice for clients seeking reliable and efficient plastic system design and installation.
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