Mainly includes: ① raw material pretreatment. Bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc. ) crushing, drying wet raw materials, removing iron-containing raw materials, and ensuring the quality of glass. (2) Batch preparation. (3) melting. The glass batch is heated at high temperature (1550~ 1600℃) in a tank kiln or crucible kiln to form uniform, bubble-free liquid glass that meets the molding requirements. ④ molding. Processing liquid glass into products with required shapes, such as flat plates and various utensils. ⑤ Heat treatment. Through annealing, quenching and other processes, stress, phase separation or crystallization in glass can be eliminated or produced, thus changing the structural state of glass.