In the 20 years since the creation of the “winter and summer” brands, which have focused on air conditioning and processing, the main products of the winter and summer are mobile industrial chillers, industrial dehumidifiers, mobile electric heaters, fuel heaters, etc., which operate various brands, such as the “dognxia”, “finner and summer”, and nakatomi, which help cool the industrial environment such as summer employees, products, precision equipment, and outdoors。