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Definition of high pressure valve:(1) The valve with absolute pressure lower th...
2022/3/20 15:20:08
Main standards for stop valves① Gb12233-89 general purpose valves and iron glob...
2022/3/20 15:19:29
In the 1950s, ball valves gradually appeared in the industrial production of we...
2022/3/20 15:19:03