... the industrial-grade standard is in conformity with GB437-93 , and the feed-grade standard is in conformity with HG2932-1999Characteristic ... sulphate:Bright blue color, even pellet, fine mobility, dry and not agglomeration, for long-term storage.Powder copper sulphate:Even ... fodder, fertilizer, pigment, chemical, pesticide, electroplating, mining ore, animal medicine field and so on. Copper sulphate