Dongyang Yuzhou Copper Products Co..Ltd. set up in 1986, is a professional enterprise engaged in manufacturing plumbing fittings. heating & ventilation equipnent and hardware machinery. In 2005. it developed thermostatic radiator vaive in contormity with EN215 standards, yearly produces 2millions piuces of thermostatic heads and 5 milion pieces of thermometer bulbs which are mainly exoorted to ftaly Germany, Turkey. France, Britain. Russia. etc.