... in the manufacturing and marketing of Sodium sulfate , Cryolite , Soda ash , Edible alkali, Polyaluminium Chloride, Polyacrylamide, Polyaluminium Ferric ... mainly export to North America,Asia and Europe .Our factory covers an area more than 50,000 aquare meters ... . ItemValueType IType IIGrade AGrade Asodium sulfate content, Na2SO4 %>99.198.3water insoluble substance %<0.040.08calcium and magnesium ...