Assistant valve enterprise to win the world
DN:NPS1/2"~14"
Class:Class150~600
Stand:API
TIANGONG VALVE GROUP CO. LTD
DN:DN200
Class:PN1.6
Stand:GB
CHINESE - DIANJIAN VALVE CO. LTD.
DN:DN15~200
Class:PN16~25
Stand:GB 12235
YUMING VALVE GROUP CO., LTD.
DN:DN15~400
Class:PN16~40