Strong elasticity and good insulation, plasticity, water and gas insulation, tension and wear resistance, etc., widely used in industry, agriculture, national defense, transportation, transportation, machinery manufacturing, medical and health fields and daily life, such as transportation tires; Industrial transport belts, transmission belts, various sealing rings; Medical gloves and blood transfusion tubes; Rubber shoes, raincoats, warm water bags and so on used in daily life are made of rubber as the main raw material. Aircraft, cannons, tanks used in national defense, and even rockets, satellites, spacecraft, and space shuttles in the field of cutting-edge science and technology need a large number of rubber parts.