Pharmacy, fertilizer, printing and dyeing, leather, paints Specifications1.Magnesium Sulphate Heptahydrate, 2.purity:99.5%min 3.Magnesium Fertilizer. 4. ... purity and consistent quality that permit standardization of its use in industry.our factory have many years' experience of export,we ... set up our long terms business. If you are interested in the prodcut and others, please feel free to contact with ...