Ball valves play a very important role in the petrochemical industry. Ball valves are widely used in various working conditions in the petrochemical industry, including special environments such as wear resistance, high-frequency switching, hydrogen high pressure, and ultra-low temperature. Imported ball valves usually perform well under these harsh working conditions because they are usually developed by foreign valve manufacturers in cooperation with patent holders. After a large number of engineering projects and continuous improvement, they have stable performance and reliable quality.