... seaside city ,which engages in the manufacturing and marketing of Sodium sulfate , Cryolite , Soda ash , Edible alkali, Polyaluminium ... Polyaluminium Ferric Chloride ,Polymerization iron sulfate , potassium sulfateand Sodium Tripolyphosphate . And our products mainly export to North America, ... be used to adjust the PH value of buffer liquid soap.Industrial water softener, leather making agents, paint, ...