For fine particles with a diameter of 75 nm (0.075 micron), its filtration performance exceeds 95%. It is reported that the diameter of COVID-19 is about 100 nm. PM2.5 particles are as high as 2,500 nanometers (2.5 microns). According to the recent test report issued by Liaoning Medical Device Inspection and Testing Institute, the key indexes such as filtration performance and blood permeability resistance all meet the requirements of the national standard GB 19083-20 10 for medical protective masks.
The performance of this mask can be witnessed by the most intuitive method: arrange a mask in a bowl shape and pour some water into it. At this time, the water can be stably left in? Bowl? On the other side of the mask, there is no water leakage at all. After that, put on a mask and feel the breath. Its air permeability is quite good, which is better than the conventional disposable medical protective mask.
The mask is produced by Shanghai Chen Ju Baby Clothing Co., Ltd., which was established in 1994. Its main business is children's wear, but its protective masks and masks were developed and manufactured in 2003. Sars? It worked. After the outbreak, it docked with a high-tech enterprise named Hampton, which mastered a new type of polymer material technology and just obtained the national patent authorization at the end of last year. Combining the strengths of both sides, we quickly developed a reusable mask. The current demand is like a flood, and it won't last long. Therefore, the development of new masks will not bring significant benefits to enterprises in the long run. We go all out, but we also hope that we don't need to produce any masks, because that means the epidemic is completely over.