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 Dalian DV Valve Co.,Ltd.(DDVC),founded in 1956,occupies an area of 140,000m2, 700 staffs with an asset of 500,000,000 is reformed on the basis of Dalian High Pressure Valve Factory in July 2002.     The company with a permission of valve design and manufacturing of Nuclear-Grade Ⅰ,Nuclear-Grade Ⅱand Nuclear-Grade Ⅲ is a manufacturing enterprise wit........