... has the five-proof advantage: anti-shock, water proof, fire proof, anti-crack and aging proof. And the whole construction ... 2 Good fireproofing characteristic,nonflammable material A grade, its fire-resistantlimit has reached more than 3 hours. 3 Good ... No hygroscopic,no deformation,good tenacity. 5 Heat insulation,sound insulation,the index of the sound insulation has reached50dB.This kind ...