... . Application Used as one of the main auxiliaries for synthetic detergent, synergist for soap; Water softener, tanning agent for leather ... treatment and so on. Mainly used as a synthetic detergent auxiliaries, synergist for soap and soap to prevent the article ... of chemical products. Our main products are Caustic soda, Sodium tripolyphosphate (STPP), and Zinc oxide. We can supply the very excellent ...