Quality Trailer Products is a manufacturer and distributor of light and medium-duty trailer components. The company produces fenders, axles, brakes and wheels at several assembly plants and operates more than 15 service branches throughout the United States. Quality Trailer Products is a subsidiary of Polar Corporation. Polar Corporation is comprised of several operating subsidiaries, including Polar Tank Trailer, Polar Service Center, Quality Trailer Products and Century Wheel & Rim. Polar Tank Trailer specializes in liquid and dry-bulk tank trailers. The company operates several manufacturing centers that produce stainless steel, aluminum and mild steel trailers. It also offers sales of used trailers. Polar Service Center provides tank servicing, parts sales, and new and used trailer sales. Century Wheel & Rim is a supplier of heavy-duty wheels for light and heavy-duty trailers. The company maintains several locations on the West Coast. Quality Trailer Products has a location in Plant City, Fla.