High-temperature resistant PTFE (polytetrafluoroethylene) tubing and Teflon sleeves are made from imported PTFE resin, commonly known as the \plastic king,\ through compression sintering. They exhibit excellent electrical insulation, high flame retardancy, and self-lubricating properties, and are resistant to ultra-high temperatures and chemicals, as well as almost all oils and chemicals. They are widely used in automotive, military, aerospace, and other fields.