... % 3.caustic soda prilled 99%. 4.Directly manufacture 5.High quality 1.caustic soda preal2.caustic soda preal 99%,98% 96%3.caustic soda prilled 99%.4.Directly manufacture5.High quality caustic soda preal 96% 99% caustic soda prilled 99%Sodium ... ,dyestuff, intermediate,soap,detergent,plastic,water treatment and so on caustic soda pearl 99% 98% 96%