Proven Innovation.


World Class Manufacturing.

gm cloth back in mold

Advanced Engineering. Superior Technology.


Advanced Tooling Solutions.


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

World Class Management

Proper's design lab along with continuous investment in research and development have enabled Proper to deliver cost saving solutions year after year...

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Tooling Specialties

Delivering the best products when it comes to Exterior Automotive Lighting,Glass Encapsulation,Textiles, Cockpit Modules, and Chrome Products...

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"World Class" process capabilites that include Injection Molds, Mucell, Multi-Material, Spin Stack Molds, Low Pressure Molds...

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Latest News

Proper Group & Cutting Edge

Proper Group International, a Warren-based company that services the  plastics industry, has acquired a majority ownership interest in Cutting-Edge Technologies in Oldcastle, said Sean O’Neil, president of Cutting-Edge Technologies.  For full article, click here

NPE 2015

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

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


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.