1. Pump and valve technology forum 2, mechanical CAD forum, pipeline and pressure vessel sector 3, global valve network 4, Chinese mechanical community, fluid machinery 5, Haichuan Chemical Forum r This is a forum I often go to. Many professional knowledge are available. Technology is mainly 1, Chinese valve network 2, first valve network product introduction, sales, etc.
1. Pump and valve technology forum
2, mechanical CAD forum, pipeline and pressure vessel sector
3, global valve network
4, Chinese mechanical community, fluid machinery
5, Haichuan Chemical Forum r
This is a forum I often go to. Many professional knowledge are available. Technology is mainly
1, Chinese valve network
2, first valve network
product introduction, sales, etc.
Pump valve network
Alibaba HC