Dongyang Yuzhou Copper Products Co., Ltd., set up in 1986, is a professional enterprise engaged in manufacturing plumbing fittings, heating & ventilation equipment, and hardware machinery. In 2005, it developed thermostatic radiator valves in conformity with EN215 standards, and yearly produces 2 million pieces of thermostatic heads and 5 million pieces of thermometer bulbs which are mainly exported to Italy, Germany, Turkey, France, Britain, Russia, etc.