Beijing Silk Road Enterprise Management Services Co.,LTD. is a professional manufacturer of Trunnion Mounted Ball Valve, Pneumatic Actuated Ball Valve, Flange End Ball Valve and Soft Seated Ball Valve...
Quality Control c1. QC in workshop Four supevisors will check to make sure products meet quality c2. QC in packaging Workers check whether the packs contain defect and dust before making packaging.