Polar Corporation is a full line tank trailer manufacturing, parts, and service organization, with a history reaching back to the 1930s. Having been an industry leader for so many years, Polar has the experience and expertise necessary to succeed in today's demanding marketplace, as well as into the future. Polar Corporation consists of four companies, all leaders in their respective markets. Polar Tank Trailer manufactures tank trailers. Polar Service Centers provide tank trailer parts, repair and service. Quality Trailer Products manufactures and sells parts and components, and Century Wheel and Rim distributes parts and components.