Megaseth's trademark was registered on April 20 10. It is the brand of a standardized medical supplies enterprise in Beijing, and its subordinate masks are Megsai masks. There are many kinds of masks used by Megsai, including non-woven mask, medical masks, disposable masks, dust masks, antiviral masks, medical protective masks, activated carbon masks, N95 and nN99 masks.
The story of the mask is introduced:
Ancient masks seem to have little technical content. Just tie a cloth on your face. The mask of Japanese ninja looks more delicate and wrapped more tightly. Their purpose has nothing to do with health care, but it is comparable to today's stars: people can't recognize it. Other ancient people covered their faces with a piece of cloth for a higher purpose.
The earliest recorded "masked object" appeared in the 6th century BC. Zoroastrianism in ancient Persia believed that the smell of laity was unclean, so it was necessary to cover the face with cloth in religious ceremonies. In the relief on the door of the Persian tomb, the priest wears a "mask".
There is also a professional group who also wears a piece of cloth on their faces, but in the end it is related to hygiene: food hygiene. According to Kyle Poirot, "In the palaces of the Yuan Dynasty, people who offered food covered their mouths and noses with silk cloth to let them breathe and not touch food." It has been proved that this cloth is not simple, but made of silk and gold thread.
Reference to the above content: Baidu Encyclopedia -Megaseth