What is ozone

Ozone (chemical formula O3), also known as triatomic oxygen, is named for its smell similar to fishy smell. Ozone in nature mainly exists in the altitude of 12,000 to 35,000 meters above the earth's surface, forming an ozone layer under the action of the sun's ultraviolet rays. It is a protective layer that shields organisms on the surface of the earth from ultraviolet rays. It can absorb 90% of ultraviolet rays, is a loyal "guard" of mankind, and has an irreplaceable function for maintaining the earth's ecological environment. A small amount of ozone is produced in forests, seasides, waterfalls and after thunderstorms, with a concentration of 0.01-0.08ppm. Therefore, people feel that the air is fresh, refreshing and refreshing in the above-mentioned environment. This is because of the existence of ozone. So the English translation of "Freshair" means "fresh air". So don't feel bad smell just because it is called "ozone"!