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·Anti-static underwear is a personal protective equipment worn by firefighters when working in flammable and explosive places such as flammable gas, flammable liquid vapor and dust. It has strong anti-static effect, has the advantages of moisture absorption, ventilation and comfort, and can effectively prevent static electricity generated by charged particles in flammable and explosive working environment. Anti-static clothing generally does not allow the use of metal accessories, such as must be used (such as buttons, zippers, etc.), need to ensure that the metal accessories can not be directly exposed when wearing.