Flame-retardant protective clothing is a special type of protective garment designed to prevent or mitigate the spread of flames and reduce the risk of thermal injuries. It is mainly used to protect personnel working in high-risk fire environments (such as in the chemical, power, fire-fighting, and metallurgical industries). Its core function is to prevent the spread of fire and reduce heat transfer through the material properties of the garment when exposed to flames or high temperatures, allowing personnel to have critical time for escape or firefighting, and reducing serious injuries such as burns and scalds.