Notice:If the customer has any special requirements such as disc with rubber lining etc.

注：若用户需用阀板衬橡胶等特殊要求订货时请注明。

youdao

Notice:If the customer has any special requirements such as disc with rubber lining etc.

注：若用户需用阀板衬橡胶等特殊要求订货时请注明。

youdao