1.packed in sealing polythene container ,net weight 20kg. 2.packed in aluminium moulds and compounds bags,net weight 25kg. Properties:White micro crystal,dissolve in glycol.easy moist in the air, Main purpose: Main applied into polyester produce. ItemSupperior Class Product1st Class ProductQ ualifiedAppearanceWhite or white-gray powder(Sb)%≥54~5653~5553~55(Fe)≤10PPM20PPM30PPM(Cl)≤ ...