valve, butterfly valve, globe valve, ball valve, check valve.
Balancing valve, diaphragm valve, bronze valves and Strainers, fittings, flanges.
Quality Control
Performed at every stage of manufacture...
API, DIN, JIS, GOST standard gate valve, globe valve, check valve, ball valve, butterfly valve, bottom valve, drain valve, strainer, flange and etc.
The business principle of YOUYI Industry is credit...
valve, globe valve, check valve, ball valve, butterfly valve, bottom valve, drain valve, filter, and flange, which have been widely used in fields of petroleum, petrochemical, chemical, electric...
Oilong Valve is one of China leading manufacturers of indurstrial valves such as gate valves, globe valves, check valves, ball valves, butterfly valves, plug valves,and valve gearboxes, flanges etc....
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