Its main components are silicon dioxide, aluminum oxide, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc.
According to the amount of alkali in the glass, it can be divided into alkali-free glass fiber (sodium oxide 0% to 2%, belonging to aluminum Borosilicate glass), medium-alkali glass fiber (sodium oxide 8%-12%, boron-containing or boron-free soda-lime silicate glass) and high-alkali glass fiber (sodium oxide above 13%, it is soda-lime Silicate glass).
