Find heat treating companies in Midwest, ranked by process fit, coverage, and confidence.
Green pins show verified facility points. Soft red halos show estimated city- or metro-level points. The public map starts on the contiguous U.S.
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Chicago Tempered Glass Inc., based in Chicago, is a leading manufacturer specializing in high-quality glass tempering and fabrication.
Cogmatic Machines, located in Milwaukee, Wisconsin, is a manufacturer specializing in large pitch and diameter steel sprockets, gears, gear racks, and drum segments.
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Snapshot updated Apr 18, 2026. This normalized public directory reflects process and location coverage only. It does not show live capacity, pricing, or quote availability.