Shanghai high and low pressure valve Co., Ltd. (formerly Shanghai high and low pressure valve factory) belong to Shanghai rongzhuang group Holding company,Under the Shanghai Lianxin Industrial Company, Shanghai hundred Hotel Management Co. Ltd., Shanghai Mark Heavy Industry Co. Ltd., Shanghai Mark desulfurization electromechanical valve Co. ltd.. Is located in Shanghai Baoshan economic and Technological Development Zone, with more than twenty years, specializing in the design and manufacture of various types of high and high pressure valve experience, strong technical force, advanced production technology. The factory covers an area of 38000 square meters, construction area of 20000 square meters, more than 280 employees, including engineering and technical personnel 28 people, senior engineer, engineer title 18. The development center works closely with the major scientific and technological research institutes in Shanghai. The group deals with valves, casting, machinery and equipment, hotels, restaurants, leather, real estate and other industries. It is a large and medium-sized enterprise integrating scientific research, production, sales and trade.