Class Ⅰ: Sodium carbonate for special industrial use, suitable for the manufacture of picture tube glass bulbs, float glass, optical glass as a coagulant aid, mainly to adjust the PH value of the flocculation process.
Class II: Industrial sodium carbonate produced from general industrial salt and natural carbon as raw materials, including light sodium carbonate and heavy sodium carbonate.
Class III: It is industrial sodium carbonate produced by sodium sulfate type brine salt as raw material and combined with alkali method, including light sodium carbonate and heavy sodium carbonate.