http://www.zzvalvecn.com/ Pneumatic Flange Diaphragm Valve factory Our History ZHEJIANG ZHONGZHI VALVE GROUP CO., LTD. is manufacturer of Diaphragm Valve, Pneumatic Diaphragm Valve, Ball Valve, Fluorine-lined Butterfly Valve, Fluorine-lined Ball Valve, Limit Switch Box, Solenoid Valve and other valves. Over the past 10 years, our company has designed and manufactured a series products of international widely in petroleum industry, chemical industry, light industry, power plants, metallurgy, HVAC, medical treatment, fire, water treatment, etc. Automatic processing of high-precision CNC machine tools insures the stability and reliabil
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