... and dimensions4 Excellent thermal insulation,5 Sound insulation6 Anti-aging7 High impact resistance8 Good waterproof9 Easy to clean10. Corrosion resistance11. Scientific ... elasticity modulus, MPa≥1960Oxgen index,%≥38Low temperature drop weight impact test≤1High-low temperature dimension reciprocal change rate,%±0. ... ,kJ/sq.m.23±2-10±1Weather resistantCharpy impact strength,kJ/sq.m.Size A≥28Size A≥ ...