Four fluorine crucibles

Teflon (i.e. PTFE, F4) characteristic
　　Outward appearance pure Baise
　　Thermostable: Application temperature - 200~+250℃;
　　Bears the low temperature: - 196℃ may maintain 5%;
　Anti-corrosive: Bears the strong acid, the strong alkali, the aqua regia and each organic solvent;
　　Bears the insulation: The dielectric properties with the temperature, the frequency have nothing to do with;
　High lubrication: In solid state material friction coefficient most bottom;

　　Nonstick: Nonstick any material;
　　Not poisons: Has the physiological inertia, may implant in the human body.