Burning, producing few smoke, no melting, no poisonous gas. keeping its original shape after carbonization.
纤维燃烧时，仅产生少量烟气，不熔融、不释放毒气，且具有自灭效果，碳化后能保持原有形态；
2
When the fuel for the heating furnace of Beiman Special steel Corporation was changed from gas to oil, severe carbonization happened on the surface of cold-drawn steel.