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In general, there are two manufacturing methods of antistatic coating, that is, adding antistatic agent or conductive material to the resin. Add antistatic agent such as quaternary ammonium salt in the resin, and coat the resin surface with 0.1-10 (mass fraction) antistatic agent such as polyolefin, which brings the ability of permanently restoring and accumulating electrostatic charge. Besides, people can add conductive substance such as inorganic carbon black or silver powder to the resin to prevent static electricity while silver is expensive.