... pure semiconductor chemicals and TFT-LCDs, metal surface treatment, phosphates, food additives and beverages, wastewater treatment, refractories, catalysts, and so on.1 . Food ... and kidney health4. Wet chemical etching5. Phosphates6. Refractories7. Catalysts 8. Wastewater treatment9. Wood and fabric flameproofing10. Boiler cleaning11. Opacity control in ...