This article mainly introduces the KN95 air valve, like the anti-smog mask, there is a breathing valve switch like a button, the design of the breathing valve is one-way air out, and there are several layers of flaps on it.

Fancy yarn is made by special craftsmanship and has special appearance and color yarn, including fancy thread and fancy thread. It is formed by twisting core yarn, decorative yarn and fixed yarn on a pattern twisting machine. The surface has special appearance shapes or colors such as fiber knots, s......

Hydrophobic fibers are synthetic fibers, the raw material sources of these fibers are not restricted by agricultural and sideline products, and they have broad development prospects. In addition, the strength of all synthetic fibers is much higher than that of natural fibers, abrasion-resistant, tea......

In short, blended yarn is a variety of fabrics woven with polyester staple fiber and cotton fiber blended yarn. This kind of fabric is relatively common in our lives, and the appearance of the fabric is relatively crisp and the fabric is very beautiful. It is durable and durable, easy to clean, and ......