Polar believes there's something cool about trailers. Through its various subsidiaries, Polar makes tank trailers and trailer parts, and offers maintenance and repair services. Its tank trailers (in aluminum, and stainless and mild steel) haul chemicals, construction materials, dry bulk goods, food, and petroleum. Polar's service centers provide parts and repairs, and sell used trailers. Its Quality Trailer Products subsidiary specializes in manufacturing and distributing parts such as light-duty trailer axles, brakes, and fenders. The Century Wheel & Rim division supplies heavy-duty wheels for industrial and agricultural applications. Founded in 1939, Polar is managed by a private investment fund led by Questor.