It has consisted of forever fire resistance and instance fire resistance.
分为永久性防火和瞬间防火。
Forever fire resistance is made from aramid materials, with high cost on production.
永久性防火线为芳纶材料制成，成本较高。
Some will remember an image of fire, or a story of rescue. Some will carry memories of a face and a voice gone forever. I.
有些人还会记得火光冲天的景象，记得感人的救援故事，还有些人会将那些业已消失的音容笑貌留在记忆里。
Some will remember an image of fire, or a story of rescue. Some will carry memories of a face and a voice gone forever. I.
有些人还会记得火光冲天的景象，记得感人的救援故事，还有些人会将那些业已消失的音容笑貌留在记忆里。
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