Chemical composition and optical properties of similar glass, also in the Abe map is also located in the adjacent position. Shabu glass factory Abeto has a set of straight lines and curves, the Abbe is divided into many areas, the optical glass classification; such as crown glass K5, K7, K10 in the K area, flint glass F2, F4, F5 in the F Area.

The symbol in the glass name: F for the flint K on behalf of the crown B on behalf of boron BA on behalf of barium LA on behalf of lanthanum N on behalf of lead-free P on behalf of phosphorus