... purities and appearances (96%,99% and flakes, solid,peals); anhydrous sodium sulfite, sodium bisulfite, ... If you are interested in those products ,pls ... used in textiles industry, printing, detergent, paper-making, soap-making, metallurgy, Glass, enamel, medicament, oil-refining and making synthetic fiber, plastics, etc. ITEMSSTANDARDRESULTSNaOH %≥99 ...