Appearance: flakes, solid, peals Packing Flakes or pearls: 25kg plastic bags( 3layer pp& pe) solid: Iron drum, net WT: 200kg ( High of Drum: 90cm) Specification of Caustic soda Caustic soda flakes: 96% 98% 99% Caustic soda solid: 96% 98% 99% Caustic soda peals: 99%