Its limiting oxygen index (LOI) value was over 50, which further promoted its flame retardant effect and its value for practical USES.
限氧指数值高达50以上，进一步提高了阻燃效果及其实用价值。
Its limiting oxygen index (LOI) value was over 50, which further promoted its flame retard...
限氧指数值高达50以上，进一步提高了阻燃效果及其实用价值。
Its limiting oxygen index (LOI) value was over 50, which further promoted its flame retard...
限氧指数值高达50以上，进一步提高了阻燃效果及其实用价值。
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