1. Alkali-free glass fiber (E glass fiber): alkali metal oxide content < 0.05%, good chemical stability, electrical insulation, strength, mainly used as electrical insulating materials, FRP reinforcement materials, etc.
2. Medium alkali glass fiber (C glass fiber): alkali metal oxide content is 11.5%-12.5%, high alkali content, can not be used as electrical insulating material, its chemical stability and strength are good, generally used as latex cloth, checkered cloth substrate, acid filter cloth, window screen substrate, etc., can also be used as acid filter cloth, window screen substrate, etc.
3. High alkali glass fiber (A glass fiber): alkali metal oxide content > 15%, such as glass fiber drawn from broken flat glass, broken bottle glass, etc. It can be used as a waterproof and moisture-proof material such as a separator, pipe wrapping cloth and felt sheet for the battery.
4. Special glass fiber (S glass fiber): high-strength glass fiber composed of pure magnesium-aluminum-silicon ternary, mainly including magnesium-aluminum-silicon high-strength and high-elasticity glass fiber, silicon-aluminum-calcium-magnesium chemical-resistant glass fiber, lead-containing fiber, high-silica fiber, quartz fiber, etc.
