Continuous foggy days, closed doors and windows to hide at home is a relatively better choice. But can indoor air quality be reassuring? On March 3, the reporter learned from the National Indoor Interior Environment and Environmental Product Quality Supervision and Inspection Center that this week, 100 cities will be selected to conduct large-scale investigations on indoor pollution in tens of thousands of households. Beijing has begun as the first stop. Air quality measuring instruments were distributed to nearly 300 households. The person in charge said that the focus of this survey is the concentration of indoor PM2.5 and formaldehyde pollution. It is expected that by May and June this year, the first domestic indoor air quality white paper will be released based on the survey data.
Dai Zizhu, the drafter of the National Indoor Air Quality Standard, said that the main victims of indoor air pollution are the elderly, children, pregnant women and people with respiratory diseases, but the penetration rate of Chinese household air purifiers is only 0.1%, and the penetration rate in Japan and the United States. Then reached 17% and 27% respectively. However, many consumers are not sure how to choose and use air purifiers.
In addition, the air purifier does not have a versatile type, and consumers need to purchase according to actual needs. If it is a newly renovated living room, it is necessary to take into account the removal of formaldehyde and other pollutants and PM2.5. If it is a house that has been in residence for many years, it will focus on the removal effect of PM2.5. Pay attention to the type of technology of the purifier, and carefully select the purifier of the single high-pressure dust collection technology, which is likely to cause the indoor ozone content to exceed the standard. In addition, negative oxygen ion purification may improve comfort, but has no effect on the improvement of pollution conditions.
Trousers refer to pants that cover the entire leg from the waist to the ankle. Generally, there are sports pants, jeans, harem pants, wide-leg pants, trousers, and the colors are more varied. The trousers should preferably have an inner lining, which not only fits well, but also hides the bloated body. Whether or not to wear a style with pleats at the trousers depends on the height and the height of the trousers. Those who are tall and thin can wear pleated trousers, but if the height is less than 162 cm, it is best not to try it lightly. Pay special attention to the smoothness of the lower part of the trousers. This is the key to the fit of the trousers. It is also the key to whether the sewing technology is excellent. A bad crotch will make the trousers sag, bulge and not fit properly.
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