Founded in 1981, Zhejiang Yongjiu Scientific & Technological Industrial Co., Ltd. is a specialized manufacturer of solenoid valves, manual valves, pressure reducing valves, angle seat valves, and LPG automatic control valves. Our vast product line includes over 30 series in 5,000 different specifications. Our assets include our own research institute and academy school, as well as several manufacturing factories. Currently, we hold eighteen domestic and international patents. Our products ...