... , has beautiful book and never has any pollution, therefore, it is a new generation high quality heat-insulating, and heat-preservation material ... ,50%compression Time,72h)Anti-ozone-Not Cracking GB/T7762Ozone pressure, 202mPa, 200h Aging Resistance-Slightly crumpling, no cracks GB/T16259150hno ... pin holes, not deforming Temperature -40-110GB/T17794 Rubber Foam- Pipe Section