Haizheng Laizhou Shandong Province China
Dongsheng Valve Corporation located in Laizhou Yantai city Shandong Province,is a manufacturer of high quality valves primarily for export products are mainly OEM . valve founded the company 2002 We have 180 employees including 18 technicians, covering an ...
Valve,Valve Fittings,pipe connecting,Flange,casting