Rubber can be divided into natural rubber and synthetic rubber. The consumption of natural rubber accounts for 1 / 3, and that of synthetic rubber accounts for 2 / 3.

According to the appearance of rubber: rubber can be divided into four categories: solid rubber (also known as dry rubber), emulsion rubber (hereinafter referred to as latex), liquid rubber and powder rubber.

According to the performance and use of rubber: in addition to natural rubber, synthetic rubber can be divided into general synthetic rubber, semi general synthetic rubber, special synthetic rubber and special synthetic rubber.

According to the physical form of rubber: rubber can be divided into hard rubber and soft rubber, raw rubber and mixed rubber, etc.

According to performance and use: general rubber and special rubber.

Natural rubber

Natural rubber mainly comes from three leaf rubber tree. When the epidermis of this kind of rubber tree is cut, milky juice will flow out, which is called latex. Natural rubber can be obtained by coagulation, washing, molding and drying of latex.