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STONE Enterprise Co., Ltd. Is a private enterprise which professinally professionally manufacturers actuators and various valves over 30 years. The products are based on the standerds of GB, JB, API, JIS etc. We use speed controlled machining nechanism to assure the precision of our products. The main products of our manufacture includes aluminum alloyed actuator,cast-iron actuatormflange ended ball valve,three-piece cylinder actuated ball valve,soldered-connection ball valve,three-way valve,two-piece ball valve,air-operated control valve,gate valve,the cut-off valve,thread Y stop valve,pressure reduce valve etc. The qualified manager authentication system. The productions are worthy of reliance. Our valves and other products are widely used on electronic industrial automatism,petrol andchemical industry dyeing machining producers,sewage plant,variousindustry pipeline,automatic mechanical valve industry etc.
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