人妻精品久久久久中文字幕69,色妺妺视频网,国产在线第一区二区三区,亚洲香蕉网久久综合影视

The mask developed by Atlan has a cool feeling spunbonded non-woven fabric. The cloth surface is soft and close to the skin, and the body feels cool at the same time. Each fiber of non-woven fabric is composed of a skin layer and a core layer. The core layer has excellent temperature resistance and good strength. The skin layer has low melting point and is bonded to each other to form a cloth. As the fiber is composed of continuous long fiber, without binding point, the fiber will not fall off after being made into the mask material, so it has an excellent prospect in children's safety mask; the resistance of this type of spunbonded non-woven fabric is as low as 1 pa, which is suitable for the production of low resistance mask.


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