1,Product name Zinc Sulphate Hepta 2,Purity Zn 22% min 3,Appearance white powder 4,Use for Agriculture Grade 1, ... 0.002% maxPacking In 25 kg bagsTangshan C&M TradingCo.,Ltd,established in 1999, is a company mainly engaged in the ... .With "Sincere and Pragmatic" as motto, Tangshan C&M Trading Co.,Ltd.welcomes friends from every part of the world for business ...