SANZHOU AUTOMATION DASH CO.,LTD specialized in manufacturing control valves for more than 10 years,located in Shanghai China.Our main products are Control valves,electric control valves,pneumatic control valves,S series high performance control valves,self-operated pressure control valve,self-operated temperature control valve,actuators and so on.So far,we are certified with ISO9001,CE,API6D,and IQNET.MSN:Jane8705 at live dot cnYahoo???j515 at yahoo dot cnSkype:jane87051