Zhejiang Zhongzheng Valve Co., Ltd. was founded in 1984. The major products include electric station valves, gate valves, check valves, back pressure valves, ball valves, butterfly valves and non-standard valves of various specifications a client wants, of which the electric station valve, water-sealed gate valve, check valves, vacuum gate valves, and drain valves have huge diameters and are able to resist high and low temperatures, especially the check valve which has its own unique advantages. Company is able to produce to latest standards both in China and abroad. Valve body may use universally accepted materials of WCB, LCB, WC6, WC9, 1Cr5Mo, 15CrMo1V, 20CrMoV, CF8, CF8M, CF3, CF3M, and 1Cr18Ni9Ti and is able to work at temperature between -196 centigrade and 600 centigrade. Our products are widely to power stations, petrol-chemical, urban construction, natural gas, medicine, metallurgy, and mines. Some of them have replaced the imported ones in China, and are exported to Middle East and South Asia.

Quality is the first, and improvement never ends. That's the tenet for all GIOSTO people. In 2002 Company passed ISO9001 Quality System certification and has advanced into a high-tech one since then integrating industrial valve design, manufacture, test and sales. Our company sets up CAD center and uses 3D stimulation design, in which optimized design will be done to valves and parts in conditions stimulated from reality to meet with rigorous requirements.

Company adopts the latest network management, in which way the sales (PRO-sales, in-sales, and after-sales), manufacture, design, finance, stock, and human resources are all under the direct management of computer network. We help to provide the optimal products and service to customers during shortest time. In addition, our company establishes technical support and after-sale service department to serve customers all day around.