Specification:Assay:99.5%min,Mg:9.6%min,Mgo:16%min,S:12.5%min,Fe:0.002%max,Cl:0.007%max,Pb:0.001%max,As:0.0002%max,Water insoluble:0.001%max,Ph:4-6.5,size:0.1-1mm,0.2-4mm,1-4mm Application: magnesium sulphate for Agriculture: Sulfur and magnesium can provide rich nutrients for crops that it contributes to crop growth and increase the output,it also helps to loosen the soil and improve soil quality. Magnesium sulphate used in industrial: It can be used in printing and dyeing,industry,monosodium glutamate and yeast fermentation and accessory ingredient for ABS nad PVC resin Magnesium sulphate for stocking raising: Magnesium is usually fertilization among the early spring and the end of year,until the grass can provide adequate magnesium,it can also added in the feed and drinking water to meet growing demand of dairy cow's sebum in order to improve the quality and quantity of milk cows.