Polytetrafluoroethylene, its chemical formula is (C ² F). This material has unique properties. It has excellent chemical corrosion resistance, and is hardly eroded by various chemical reagents. Strong acids and alkalis cannot damage it at all. Its lubricity is excellent, the surface friction coefficient is very low, just like the slippery ice surface, the object slides on it, and there is little blockage. And it has excellent heat and cold resistance, no deformation in high temperature baking, and tough as ever in cold freezing.

Because of its excellent characteristics, it is widely used in many fields. In the chemical equipment, it is used as a corrosion-resistant lining to ensure the long-term stable operation of the equipment; in the electronic field, it is a good material for insulation to ensure accurate current conduction; on the surface of cooking utensils, it is a non-stick coating, making cooking convenient and food non-stick to the bottom of the pan. It is actually the best among materials, contributing to the development of various industries and making outstanding contributions.