1, according to the properties of the adhesive: animal glue, plant glue, inorganic substances and minerals, synthetic elastomers, synthetic thermoplastic materials, etc. 2, according to the physical form: solvent-free liquids, organic solvents, liquids, water-based liquids, etc. 3, according to the method of hardening: low-temperature hardening, hardening at normal temperatures, hardening at high temperatures, etc. 4, according to the adhesive: polyacrylic acid resins, urethane adhesive, synthetic adhesives.

Glue is an intermediate connecting the two materials, mostly appearing in water, belongs to the fine chemical industry, a wide variety of types, mainly to the sticky material, physical form, hardening method and the material to be adhered to the classification.

Common instant adhesive (common-1203 instant adhesive - ethyl cyanoacrylate strong instant adhesive is a), epoxy resin bonding class, anaerobic glue, UV glue (ultraviolet light curing class), hot melt adhesive, pressure-sensitive adhesive, latex and so on.

In the use of the conditions of glue and sealant to be used in a certain environment, the working conditions have an important impact on the performance of the bonding. In the use of conditions, there are force, ambient temperature and humidity, chemical media, outdoor conditions and so on.