Rubber is produced in Indonesia, Malaysia, China, India, Myanmar, Vietnam and Sri Lanka. Rubber in China is mainly distributed in Yunnan, Guangdong, Hainan and other places. Rubber can be divided into raw rubber, latex, liquid rubber and powder rubber according to its morphology. Rubber mainly comes from rubber tree with three leaves. After the epidermis of this tree is cut, milky white juice will flow out. This juice is called latex. Latex will become rubber after washing, molding and drying.

Rubber is divided into natural rubber and synthetic rubber. Natural rubber is made by extracting gum from rubber tree, rubber grass and other plants and processing it. Synthetic rubber is polymerized from various monomers, and rubber products are widely used in all aspects of industry or life.