Crosile®CPTEO is the main raw material for preparing Si-69, KH-550 and other silane coupling agents. It is also used as a rubber processing aid to couple inorganic fillers in various halogenated rubber to improve various physical and mechanical properties. It can also be used to synthesize organosilicon compounds containing quaternary ammonium cations, as antifungal and odor-proof finishing agents, with special bactericidal, odor-proof, antistatic and surface activity.