Hebei Jinyifeng Copper Co., LTD. Is a limited liability company with production processing, distribution,wholesale business.Established in 1998, is the biggest manufacturer of copper sulfate in hebei province. An annual production capacityis 6000 tons.Our main products are copper sulfate (including: feed grade,plating grade, industry grade, agricultural grade,also can according to the customers request processing customized other special specification copper sulfate), copper oxide,copper carbon...