... specially the change, the product odorless, is tasteless, is non-toxic. Therefore obtains widely in the medical equipment and the ... nature, may under 150 degrees nearly forever use, but the non-performance changes; May in under the 200 long-term usage 10 ... different air penetrability. 8. physiological inertia: Silica gel odorless, non-toxic, tasteless, has extremely the good physiology inertia and the ...