... manufacturer of caustic soda in China, We supply high quality Caustic Soda Flakes, Pearls, Solid, mainly used in Papermaking, Soap ... Making, Artifical Fiber, Priting etcHigh quality Caustic Soda Flakes, Pearls, Solid, mainly used in Papermaking, Soap Making, Artifical Fiber ... max.0.086%Fe2O30.005% max.0.004 Caustic Soda Pearls' Spec.: ITERMUNITSPECIFICATIONResultNaOH%≥99% Na2CO3 %≤0.50% NaCl %≤0. ...