... certificate Standard:DIN,BS,API,JIS,MSS etc Electric actuator butterfly valve Feature:1) Standard for face to face: DIN, BS ... Profile: We, Tianjin Tanggu Tianshun Valve Co., Ltd., have manufactured butterfly valves for more than 10 years. We have manufactured kinds ... and reputation as our company’s life.We have won the approval from a great number of overseas customers like Germany , France, Italy ...