Natural rubber is widely used in industry, agriculture, national defense, transportation, machinery manufacturing, medical and health care and daily life, such as tires used in transportation, because of its strong elasticity, good insulation, strong plasticity, water and gas insulation, high tensile strength and wear resistance. Industrial conveyor belts, transmission belts and various sealing rings; Medical gloves and blood transfusion containers; Rubber overshoes, raincoats and warm water bags used in daily life are all made of rubber as the main raw material. Planes, cannons, tanks for national defense, and even rockets, satellites, spaceships and space shuttles in cutting-edge science and technology all need a lot of rubber parts.