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Indoor air pollution has become a focus of attention in recent years. There are many types of indoor air pollutants with complex sources, which are harmful to human health. Therefore, indoor air purification has become an important means to protect people's health.
All-in-one air quality sensor...
The air on which human beings live is a mixture of gases in the earth's atmosphere, which is mainly composed of 78% nitrogen, 21% oxygen, and 1% rare gases and impurities.
Oxygen in the air is necessary for all aerobic organisms. All animals need to breathe oxygen, and plants use carbon dioxide...
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