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This Co.specializes in the development and production of butterfly vales,ball valves and hydraulic control valves and holds digital-controlled lathe and borer,specially heavy-scalevertical lathe etc.high-grade,precise and unique equipments,which are up to 80 pieces and can make various valves with an aperture up to 3000m.valve made with th standeards of ANSI,API,JIS,BS and others are available for supply to users on request and are used for municipal works, petroleum,chemical industry,powe station,metallurgy,national defence, scientific research etc.fields.