Zhe Jiang Zhengzhou National Hi-Tech Enterprises ------ Valve Manufacturing Co., Ltd. was established in 1995, is a product design, manufacturing, sales and service in one of the modern enterprise; production of various types of valves DN40 ~ DN4500 and hydraulic control actuators sold in China and around the world, welcomed by the majority of users and trust. Strong technical force, a unit of national torch plan project commitments; subordinate "is hydraulic control valve Island R & D Center" was identified as high-tech R & D center in Zhejiang Province, in intelligence, fluid control, frequency conversion, explosion, desulfurization, etc.