... dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; As an oil ... water. Tanning agent. Dyeing auxiliary. Paint, kaolin, magnesium oxide. Paper industry used to prevent oil pollution agent. Food ... products. Our main products are Caustic soda, Sodium tripolyphosphate (STPP), and Zinc oxide. We can supply the very excellent quality, ...