Thermotech, Inc. designs, engineers, and manufactures injection-molded electrical and mechanical components and assemblies primarily for the automotive, small engine, electronics, other industrial and consumer end markets. Thermotech operates four injection molding plants in the U.S. and Mexico. The company was founded in 1949 and is headquartered in Hopkins, Minnesota.

The Plasman Group acquired Thermotech, Inc. on April 30, 2015.