... Technical Performance: 1.1 Appearance: The Product formed by the anti-sticking paper and butyl rubber, roll black, smooth surface without holes ... × 168h low temperature tests, no cracks, no foaming. 1.7 Anti-ozone performance: the surface without cracking(1) Test standard: ASTM ... -8× 40 oC × 70hr(3) Test Time: 70h 1.8 Anti-UV performance:(1) Test standard: GB / T 16422.3-1997 ...