1. Abrasive resistance which always have in thermoelectricity polymer. 2. Best shock resistance even in low temperature. 3. Low frictional factor, and well sliding bearing material. 4. Lubricity (no caking, in adhesion). 5. Best chemical corrosion resistance and stress craze resistance. 6. Excellent machinery process ability. 7. Lowest water absorption (<0. 01%). 8. Paragon electric insulativity and antistatic behavior. 9. Nice high energy radioactive resistance. 10. Density is lower than other thermoplastics (< 1g/m3). 11. Long using temperature range: -269°c--90°c.