Haimen Hydraulic Component Factory Co., Ltd. is one of the key designated production enterprise appointed by the Ministry of Machinery Industry to produce hydraulic parts and hydraulic control systems and also a high-tech enterprise of Jiangsu Province. With an annual output of 120,000 hydraulic valves and over 2,500 sets of hydraulic control devices, it is also the factory that has the biggest output of overlapped valves. Among those products, the overlapped valve products have been listed as Class-A product by the government, and can interchange with the same kind products from Germany REXROTH, American VICKERS and Japan JUKEN. Some of the products have filled the blank of the market in China and been sold to the regions all over the country, and some have been exported to the Southeast Asia and West-Europe markets, enjoying a high reputation in the industry and among the customers.