Proven Innovation.

Applied the Proper Way

For over 40 years, Proper Group International has been committed to industry leadership and our clients' success. That's The Proper Way.     GET IN TOUCH

Proper Group International

We've come a long way from our first 2,000 square foot moldmaking facility in Warren, Michigan...

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Proper Tooling

With a superior life-cycle strategy, our tooling division sets the industry standard for production programs...

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Proper Polymers

Our state of the art facility in Anderson, South Carolina manufactures industry leading plastic components for exterior and interior trim...

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Latest News

NPE 2015

NPE will be here in no time at HERE to register for FREE

Live Demonstration on the Krauss Maffei booth W903, showcasing a new mold using RocTool's molding technology


Proper Group International uses leading edge technology to make plastic injection molds, production molding and rapid prototyping for automotive and consumer products.



With great excitement, Proper Group is proud to announce that the company is the recipient of the Champion of Workforce Development Award. Michigan Governor Rick Snyder and Macomb County Executive Mark A. Hackel presented the award to Proper at the 2014 Macomb Business Award ceremony.