Glue is an intermediate connecting two materials, which mostly exists in the form of aqua. It belongs to fine chemical industry, and there are many kinds, mainly according to the adhesive, physical form, hardening method and classification method of the adhered materials. Common quick-drying adhesive (502α- cyanoacrylate strong quick-drying adhesive is one of them), epoxy resin adhesive, anaerobic adhesive water, UV adhesive (ultraviolet curing), hot melt adhesive, pressure sensitive adhesive, latex, etc.