Commodity: Zinc Sulphate Monohydrate Zn:35% min Pb:10ppm max Cd:10ppm max As:5ppm max The advantage than other company: 1.The quality assurance: Jingshi Group,our company is the leading manufactuer of micro ingredient of ZnSO4.H2O in the word.We pioneered in having quality management system certified under HACCP,ISO9001:2000,ISO14001&FAMI-QS to assure product safety,quality and customer satisfaction. 2.The prompt shipment advantage: We are one biggest manufacturer of this product with annual production 40000MT.Now we are improving our equipment.After this,the production will be 100000MT/year.With so larger production activity,we can meet your any quantity requirement with a short time. 3.the price advantage: As the direct manufacturer and trader,we surely provide the good quality and competitive price.Please check our website for more information:www.hnjsjt.net