... , rigidity, flexible, impact resistance,corrosion resistance and resistance to wear. Also it gets easy jointing way,long service, a ... weathering resistance, thermal stability, resistance to UV sunrays.7) Anti-corrosion, long service life. Wear-resistance, Impact-resistance. 8) Small ... Low construction cost. 9) Working temperature is from -20 to 40, construction in winter is also doable. 10) Electric ...