Unitherm Furnace, LLC, headquartered in Wentzville, Mo., is a manufacturer of custom thermal processing equipment, namely industrial furnaces and ovens. With more than 65 years of industry experience, Unitherm creates unique designs using standard components to ensure ease of maintenance over the life of the equipment. Unitherm has specialized in solving problems since 1980. The industrial-furnace company was the brainchild of Frank Lim, who already had two decades of experience in the furnace industry when he started considering the possibility of launching his own business. The country was in the midst of a recession, and Lim saw a market opportunity for rebuilt furnaces. Frank approached colleague Ron Kientzy, who also had extensive experience in furnace manufacturing along with instrumentation and controls — about launching a company together. Despite the economic difficulties at the time, the company they built together thrived.