... standard of GB 20 caustic soda flakes and pearls 98% and 99%name of Commodity: CAUSTIC SODA FLAKES ... fiber, textile,dyestuff,commodity,petroleum and petrochemistry industry,organic compound, pharmacy,chemical fertilizer,plastic and water disposal industries. Along with the ... hydroxide,such as: synthetic fiber,textile,dyestuff,organic compound and fine chemistry all need the high pure Sodium hydroxide ...