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Zigong New Dipper Valve(NDIV) established in 2001 and located in National High-T Industrial Zone,Zigong city, Sichuan Province,China.It is a special valve professional manufacturer with independent intellectual property right. Dipper Valve dedicated to R&D,design and manufacture High and New Tech Special Valves. Dipper Valve develop rapidly in these years,now it is the enterprise who have undertake three valve research and development task in key equipment of oil and gas pipe localizing manufacturing project of national energy bureau and China National Petroleum Corporation.