... smelting, refining tungsten, rayon and soap manufacturing. In addition, in the production of dyes, plastics, pharmaceutical and organic intermediates, old rubber ... borax, chromium salt, potassium permanganate, phosphate, etc., but also the use of many of caustic soda.6.Packing It is ... as liner,and a compound plastic woven bag as the outer layer.The net weight of each bag is 25kg..Storage and transport ...