With the deepening of environmental protection issues, people's awareness of protecting against pollutants such as haze and volatile organic compounds (VOCs) is gradually increasing. In order to reduce the inhalation of outdoor pollutants, more people choose to engage in indoor activities. However, indoor pollution has also become a major environmental problem. On September 26th, the first indoor air quality research center in China was announced to be established in Beijing. Intended to carry out research and development work on key technologies such as indoor environmental purification technology and products, promote the effective transformation of technological innovation achievements, patent application and promotion, propose improvement suggestions and specific implementation, and guide industry development.

Indoor air pollution refers to the presence of substances in the air of enclosed spaces that are harmful to human health and have concentrations that exceed national standards to the extent that they can harm human health. Harmful substances include formaldehyde, benzene, ammonia, radioactive radon, etc. In the current era of severe outdoor air pollution and with the popularization of the Internet, people's production and life have become more modern, and most people choose to engage in indoor activities. However, with the increase of indoor chemical products and electrical equipment, the function of indoor ventilation is weakened, and indoor pollution is becoming increasingly severe, seriously threatening people's physical health and life safety.

Currently, with the continuous development of science and technology, as well as the high attention paid by the country to environmental monitoring work, China's detection technology for air pollution has become more mature, and the corresponding air quality sensor components and instrument equipment are also more complete. To safeguard people's lives and health, there are countless instruments and equipment used for indoor testing.