Formula design: introduction and absorption of foreign mature glass insulator formula, the application of the "neutralization effect" of alkali metal ions and the "suppression effect" of alkaline earth metal ions to make the best formula.

Glass design: the head is designed for circular cylinder and surface thread, and stress concentration is avoided in the process of glass design. The umbrella design is suitable for various operating conditions.

Metal accessories design: 160KN insulator cap use of malleable iron, more than 160KN insulator cap made of ductile cast iron. Gossan surface using hot galvanized zinc layer thickness to meet the requirements of the service life of the insulator.

The design of component strength distribution: the purpose of controlling the mechanical strength dispersion of glass insulators is to control the average strength and the degree of dispersion of the steel feet by the more mature and easier heat treatment process of the forging steel.