1, Stpp 94% for soap, ceremic,detergent 2,we have our own factory 3,Free sample. 4, ... .Application: Used as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making ... net bag, 21 MT in the 20'FCL. USD630/Mt Sodium Tripolyphosphate ( factory)