What is the difference between glass fiber A glass, C glass, and E glass?

What is the difference between glass fiber A glass, C glass, and E glass?
Alkali metal oxide is one of the main components of ordinary glass, and its main function is to lower the melting point of glass. However, the higher the content of alkali metal oxides in the glass, the lower its chemical stability, electrical insulation properties, and strength will be correspondingly reduced. Therefore, for different uses of glass fibers, glass components with different alkali content should be used.
Therefore, the alkali content of glass fiber components is often used as a sign to distinguish continuous glass fibers for different purposes.

The difference between A glass, C glass, and E glass:
E glass: The content of alkali metal oxide is less than 0.8%, which is an aluminoborosilicate component. Its chemical stability, electrical insulation properties, and strength are all very good.
C glass: The content of alkali metal oxide is 11.9%-16.4%. It is a soda-lime silicate component. Because of its high alkali content, it cannot be used as an electrically insulating material, but its chemical stability and strength are good.
A glass: The alkali metal oxide content is equal to or greater than 15%. Generally, it is made of broken flat glass, broken bottle glass, etc. as raw materials. The country has banned the production of such products.