Aramid fiber molecules contain a large number of benzene rings, have good chemical stability, corrosion resistance, high specific strength, lightness and firmness, and can be used to make cables for marine vessels and deep wells. Utilizing the characteristics of high temperature resistance and fatigue resistance of aramid fiber to produce high-grade rackets, fishing rods, sleds, snowboards, ski poles, bows and arrows, rowing boats, golf clubs, etc., it can also be used to make hiking shoes with harsh sports conditions Boots, boxing gloves, racing helmets, racing car bodies, etc. As asbestos is a serious hazard to the human respiratory tract, aramid can be substituted for asbestos to make reinforced rubber seals and other seals, which are used for automobile brake pads and linings.