Polyester oxford fabric is mainly used to make flood and rain prevention products. The warp of the fabric adopts 200D nylon air variable silk and the weft adopts 160D nylon air variable silk as raw materials. It is a plain weave structure and the product is woven by water spraying. After the dyeing and finishing and coating process, the grey fabric has the advantages of soft hand feeling, strong drapability, novel style, and waterproof performance. The cloth has the luster effect of nylon…

At present, PVC is widely used in domestic and foreign disposable syringes. It has the advantages of excellent comprehensive physical and mechanical properties, low price, and simple production technology. However, PVC as a disposable medical device has the following disadvantages:

1. There may be a small amount of polyethylene monomer in PVC, which has been proved to be a carcinogen; Plasticizers that must be used in processing may gradually migrate out of the contaminated solution…

The most popular digital product on the market since 2020 is tws mini wireless earbuds. TWS is also called a wireless headset in daily life.

Because the working principle is that the mobile phone is connected to the main headset, and then the main headset can quickly connect the secondary headset through the wireless way, so as to realize the real Bluetooth wireless separation of left and right channels.

When it comes to its history, we have to start with the apple. After the…

1. There are two types of luer lock disposable syringe: plastic and glass. Generally speaking, plastic syringes are disposable sterile syringes because of their low processing cost and further avoiding the risk of transmitting diseases through blood. Glass syringes are still used in medical treatment, because it is troublesome to disinfect with autoclave every time, so their application is limited.

2. It is illegal to reuse plastic needles even if the needles are replaced.

3.…