... 4.5*103Water absorption ratio in vacuum %≤10Size stability performance(105+-3,7d) ≤10tearing strengthN/cm≥3.0≥3 ... after production process improvement, material modification, the company plastic foaming products in its original good performance, and on the basis ... ability to further improve the ozone resistance, anti-aging performance enhancement, the service life is longer. Shanghai Jingke Industrial ...