Ma Anshan Exact Instrument Corporation.Ltd is located in Ma Anshan City high and new technical development zone.Our company specialize in designing and manufacturing kinds of pressure gauge,including common pressure gauge,liquid filled pressure gauge,fillable pressure gauge,all stainless steel pressure gauge and so on.Our product mainly export to abroad for overseas market.With advanced technology,excellent production equipment, modern testing and operating instrument,over 20 years' experience and a completely new management