PPE is a shorthand for personal protective equipment, and PPE is any device or appliance that is worn or held by an individual to guard against one or more hazards that are harmful to health and safety. Mainly used to protect employees from serious work injuries or illnesses caused by exposure to chemical radiation, electrical equipment, manpower equipment, mechanical equipment or in some hazardous workplaces. In addition to masks, safety glasses, safety shoes, personal protective equipment includes a large number of respiratory protection equipment, protective clothing, including helmets, goggles, hearing protectors (ear plugs), safety gloves, safety shoes, respirators and seat belts, etc. .