YUTIEN手动换向阀部分常规型号参考:DMG-02-2 , DMG-02-3 , DMG-03-2 , DMG-03-3 , DMT-03-2 , DMT-03-3 , DMT-04-2 , DMT-04-3 , DMT-06-2 , DMT-06-3 , DMT-10-2 , DMT-10-3 , DRT-03-2 , DRT-03-3