① According to the coating form (powder, liquid) ② According to the film forming mechanism (transformed, non transformed) ③ According to the construction method (brush, roll, spray, dip, shower, electrophoresis) ④ According to the drying method (drying at room temperature, drying, moisture curing, steam curing, radiation energy curing) ⑤ According to the use level (primer, intermediate coat, finish, putty, etc.) ⑥ By film appearance (varnish, colored paint; matte, flat, matt, high gloss; hammer paint, embossed paint, etc.) ⑦ By object of use (automobile paint, ship paint, container paint, aircraft paint, household appliance paint, etc.) Marine coatings can also be divided into antirust coatings, anti-corrosion coatings, antifouling coatings, weather resistant coatings, heat resistant coatings, and ship bottom coatings according to the characteristics of the use position and application environment Hull paint, deck paint, marking paint, oil tank paint, battery tank paint, ballast water tank paint, ammunition tank paint, living cabin paint and other special function paint, etc. ⑧ According to film performance (anticorrosive paint, insulating paint, conductive paint, heat-resistant paint, etc.) ⑨ According to film forming substances (alkyd, epoxy, chlorinated rubber, acrylic acid, polyurethane, ethylene, etc.), various classification methods above have their own characteristics, but no matter which classification method can include all the specific coating materials, so there is no unified classification method in the world. The Chinese national standard GB2705-92 adopts a classification method based on film forming substances in coatings. Coatings are generally composed of base materials (resins, adhesives), pigments, fillers, solvents and a small amount of functional additives, which can be divided into 17 categories according to the type of base materials; According to performance characteristics, it can be divided into organic coatings, inorganic coatings, solvent based coatings, solvent-free coatings, water-based coatings, powder coatings, high solids coatings and thick paste coatings; According to its functional characteristics, it can be divided into enamel, colored paint, varnish, ready mixed paint, primer, finish and intermediate paint, etc; Finished products include formwork paint, internal and external wall emulsion paint, fire retardant emulsion paint, etc. Classification of architectural paint and coating: 1. Natural paint (also known as national paint and big paint) can be divided into raw paint and cooked paint. Tianren paint film is tough, durable, acid and heat resistant, and has good gloss. 2 Oily paints and coatings (1) Clear oil (commonly known as cooked oil and fish oil). It is made of refined dry oil added with drying agent. It is often used as waterproof or moisture-proof coating, as well as for preparing original paint and ready mixed paint. (2) Oily thick paint (3) oily ready mixed paint 3 resin paint coating (1) varnish (resin paint) (2) enamel (3) gloss paint (commonly known as lacquers) (4) spray paint (nitro paint) (5) ready mixed paint. It is composed of dry oil, pigment, solvent, drier, etc.