502 environmental products for the new generation of glue toughening fast α-cyanoacrylate adhesive for quick bonding of rubber, plastics, leather, metal, glass, wood, ceramics and other materials. One-component, 100% pure reactive monomer, the case of moisture in the air an instant cure, bonding only a few seconds to several minutes (due to be sticky material or the ambient temperature varies.) Without heating, easy to use, high bonding strength, excellent flexibility. Temperature resistance, water resistance and oil resistance is good.