... were cloth. Fireproof cloth through high temperature, non-toxic, smoke-free flame-retardant coating, the liner can be used to avoid ... the best material. Because it has not flammable, flame-retardant smoke-free, high temperature, no toxic gas emissions, good insulation, no ... C under, no distortion, no burst, can be wet, steam, smoke, chemical gases with the environment play a protective role under ...