Since its establishment, Zhongde Science and Technology has been engaged in developing technologies in professional fields like pneumatic/electric/hydraulic high- performance sealed butterfly valves, high-performance sealed ball valves, high-temperature wear-resistant ball valves, fast shut-off gate valves, regulating valves, pneumatic actuator and control system to enable us to be always in the leading position of domestic control valve field. The products are widely used in high-end fields such as petroleum, chemical industry, natural gas and coal gas industry and have gained high trust from numerous users. Zhongde Science and Technology now has owned a professional valve research and development center and a first-class production platform and has passed the certification of Quality Management System (ISO9001:2008), the product certification (API 6D/609) of American Petroleum Institute, the fire protection certification (API 607/6FA), the certification of National special equipment manufacturing license for pressure pipeline “TS(A1)”, the CE certification of safety registration of European Community, the certification of product function safety (SIL 3), the certification of Environment Management System (GB/ T24001-2004/ISO14001:2004) and the certification of Occupational Health and Safety Management System (GB/T28001-2011/OHSAS18001:2007). It is the first-tier supplier for Sinopec, PetroChina, CNOOC, Sinochem and Shenhua Group, etc. and is a technology enterprise in Zhejiang Province and a new high-tech enterprise in China.