... .High quality 1.caustic soda 2.caustic soda flakes99%,98% 96%3.caustic soda prilled 99%.4.Directly manufacture5.High quality caustic soda flakes 96% 99% caustic soda prilled 99%Sodium ... ,dyestuff, intermediate,soap,detergent,plastic,water treatment and so on caustic soda flakes 99% 98% 96%