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With fire retardant, cold and warm performance. The battery is treated with fiber yarn or wool yarn for flame retardant treatment. According to GB/T5454-1997. The main raw material of this product is environmentally-friendly and flame-retardant fiber. When it is exposed to fire, it will be charred, no droplets will be sprayed, no flame will be transmitted, and the flame will be extinguished. The product has permanent flame retardant function. After repeated washing or air oxidation, the flame retardant performance is not Decrease. Average afterburning time: 0S in warp and weft direction, average smoldering time: 0S in warp and weft direction, average damage length: 53mm in warp direction, 52mm in weft direction, and oxygen index (LOI): 39.1%. Used for inner layer protection in winter or low temperature applications.