High silica glass fiber is a high temperature resistant inorganic fiber, with a silica (SiO2) content higher than 96%, a softening point close to 1700℃, and can be used for a long time at 900℃, can work at 1450℃ for 10 minutes, and can work at 1700℃ for 15 seconds and still remain in good condition. Due to its stable chemical properties, acid and alkali resistance, high temperature resistance, and ablation resistance, it has a smaller ablation rate and heat shrinkage rate (close to 1%) compared to ceramic fiber cloth, and is non-toxic and non-irritating to the human body, and has the advantages of beautiful appearance and good feel. The products are widely used in aerospace, metallurgy, chemical industry, building materials, fire protection and other industrial fields.