... bleaching, glass, paper making, tanning, metal smelting, surface treatment and filler industries. Grade: Class I first quality Packing: 50kg/piece ... : Stored in a cool, ventilated warehouse. Away from fire and heat. Acids, etc. should be kept separately, avoid mixed ... or flocculating agent in medicine, and can be used in paper, glass, printing and dyeing, synthetic fiber, leather industry as well. ...