High temperature protective bag is a type of bag specifically designed for use in high-temperature environments, mainly made of high-temperature resistant materials such as glass fiber, polyimide (P84), polytetrafluoroethylene (PTFE), etc. It can effectively isolate high temperatures and protect the items inside the bag from damage caused by high temperatures. High temperature protective bags have excellent heat resistance, corrosion resistance, and good sealing performance, and are widely used in high-temperature working environments such as steel, chemical, and power. They are indispensable safety protective equipment in industrial production and laboratories.