Shandong Woker Control Valves Co., Ltd. is a joint-stock enterprise, with more than 300 employees and fixed assets of 10 million Yuan. Being abundant in strength and passing the authentication of ISO9001 system, our company mainly deals in the special industrial valves, such as gate valves, stop valves, ball valves, butterfly valves, PTFE lined valves, safety valves and emergency cut-off valves. The valves are made of carbon steel, stainless steel, alloy steel and extra-low-carbon stainless steel and driven manually, electrically and hydrodynamically by adopting worm gears with pressure rating from 1.0Mpa to 42Mpa (150Lb to 3500Lb), diameters from DN3 to DN2000 (3/8" to 30") and operating temperatures from +780 centigrade degrees to -196 centigrade degrees. The applied standards for the products are GB, JB, ANSI, API, JIS, BS, DIN and NF. The products are widely used for the projects in the industries of petroleum, chemicals, natural gas, electric power, hydroelectricity, metallurgy, heating power, ship building and construction. By insisting on the management idea of "continuously innovate, pursuing excellence and establishing a fine brand-name", we can offer excellent service to customers in line with the aim of "quality is life and the development depends on credit standing", serve consumers sincerely, seek further development, repay the community and serve the society.