... crystal flakes,or pearls 4.Factory price 1.Nature: The pure product is the colourless transparent crystal, relative density 2.130 ... Drum: 90cm)4. Specification Caustic soda flakes: 96% 98% 99%Caustic soda solid: 96% 98% 99%Caustic soda pearls: 99% 5 ... of chemials industry ,including:PVC, melamine, urea, ammonium chloride,polyvinyl alcohol, paraffin, sodium hydroxide, and so on. For more information , ...