... Good price with good reputation Caustic Soda, Pearls or Flakes:Parameter SpecificationNaOH 99.0%MinNa2CO3 0.9%MaxNaCL ... . It is also called caustic soda pearls, caustic soda prills, or caustic soda pellets, etc. Caustic soda pearls usually dissolve 2 or 3 ... industry4) National defense industry, mechanical industry, lumber industry, metallurgical, pharmaceutical industry, urban construction and so on ...