求翻译：4、 阻燃头套, 采用芳纶等本质阻燃材料, 原材料宜采用原浆染色,不应有洗涤脱色现象, 头套应有弹性, 贴合面部, 佩带舒适。是什么意思？

4, flame-retardant hood, the nature of the use of Kevlar and other flame-retardant materials, raw materials should be stained using puree, should not be washing bleaching, caps should be flexible, fit the face, wear comfortable.

4, * flame retardant hoods, using kevlar nature such as fire retardant materials, raw material would be useful to adopt the original pulp bleaching dyeing, there should not be washed, hoods should be flexible, posted a facial, wear comfortable.

4th, Is flame-resistant the headgear, uses essences and so on fragrant black silk ribbon to be flame-resistant the material, raw material uses the oleo stock to dye suitably, should not have the lavation decolorization phenomenon, the headgear should willowy, the fitting face, wearing be comfortable

4, flame retardant caps, using nature fire-retardant materials such as Kevlar, raw material use pulp staining, there should be no washing and bleaching, hoods should be flexible, fitting face, wearing comfort.

4th, Is flame-resistant the headgear, uses essences and so on fragrant black silk ribbon to be flame-resistant the material, raw material uses the oleo stock to dye suitably, should not have the lavation decolorization phenomenon, the headgear should willowy, the fitting face, wearing be comfortable