The molecular weight of ultra-fine powder of PTFE is only 1% of the general PTFE which not only maintained the excellent performance of original, but also has high crystallinity dispersion,and easy to uniformly mixed with other materials.It is widely used in the synthesis material modification,and can significantly improve the lubricity,wear resistance,non-adhesive and fire retardant of the substrate.It also can be used as rubber ,lubricant grease,printing links, 1. Exterior: white fine powder 2. Moisture content: less than 0.03 3. Average particle size: less than 5 micron 4. Tensile strength: 8 Mpa 5. Fracture elongation: 60% 6. Appaent density: 0.56g/ square centimeter 7. Thermal gravitational: less than 0.2%Wt 8. Corrosion resistance: No change 9. Melting point: 327 more or less centigrade 10. Decomposition temperature: 430 centigrade 11. Melt viscosity: 102-106 Pa.S