... like caustic soda in different purities and appearances (96%,99% and flakes, solid,peals); anhydrous sodium sulfite, ... sodium bisulfite, ... If you are interested in those products ,pls contact me directly. Many thanks and ... , metallurgy, Glass, enamel, medicament, oil-refining and making synthetic fiber, plastics, etc. ITEMSSTANDARDRESULTSNaOH %≥99 ...