Our factory located in Zhengzhou and we specialized in Nodular cast Iron / WCB butterfly, ball, check & gate valves for almost 30 years combining with the high-speed internet technology (IOT Technology) in domestic China. We're a professional factory and specialized in low pressure(0.25-4.0Mpa) butterfly & Eccentric half ball valves. Our products applied from DN50 to DN2800 which mainly used in urban water supply, sewage treatment system.