Natural rubber can be divided into standard rubber (also known as granular rubber), smoke film, concentrated rubber, white crepe film, light-colored film, clear rubber and air-dried film. The most commonly used are standard rubber and smoke film. Standard rubber is divided into four grades: SCR5, SCR10, SCR20, and SCR50. Smoke rubber is divided into five grades: 1-5 smoke film (RSS1-RSS5).

Standard rubber: Standard rubber is mainly divided into No. 5 rubber, No. 10 rubber and No. 20 rubber. No. 5 glue is the first-grade glue, which is the best glue, which contains 0.05% impurities; No. 10 glue is the second-grade glue, which contains 0.10% impurities; No. 20 glue is the third-grade glue, which contains impurities 0.20%. Different types of rubber have different uses: No. 5 rubber is generally used to make tire inner tubes; No. 10 rubber and No. 20 rubber are generally used to make tire tires.

Cigarette film: The film obtained by fumigating the natural film that has been depressurized with moisture and heat generated by burning coconut shell. The purpose of fumigation is to dry the film and inject the anti-oxidant and anti-corrosive cresol material. Smoke film belongs to the primary shape of natural rubber.