The molecule contains active groups that can react chemically with both the inorganic and organic substances, which can couple the organic substances and the inorganic substances, and can greatly improve the electrical property, resistance to water, acid/alkali and weathering. It is mainly used as surface treatment agent of glass fibre, also widely used in the surface treatment of micro glass bead, silica hydrated white carbon black, talcum, mica, clay, fly ash etc. It can also enhance the over-all property of polyester, polyacrylate, PNC and organosilicon etc.