Copper sulfate feed grade 98% 1,Factory directly 2,free sample 3,SGS,BV,CIQ inspection welcoming Chemical name: copper sulfate pentahydrate(Other names: Blue vitriol, Blue store ... ::Granular blue crystal or powerparticle size uniformity, mobility, and soluble in water, without impurities.Fineness: ≥80 meshExecutive standard: GB437-93 ItemStandard ...