In 2015, the smog investigation documentary "Under the Dome," created by host Chai Jing, sparked widespread discussion among the public. The word smog became an unavoidable issue for people living in cities. As stated at the end of "Under the Dome," "This is how history is created—by thousands of ordinary people who say no, who are dissatisfied, who don't want to wait, and who no longer pass the buck. They stand up to do something. What I want to do is right here, right now, in this place, and by myself." As a media professional, she stood up; as an entrepreneur, one can also stand up.

For entrepreneurs, environmental protection is very important. It is feasible to produce products that do not pollute the environment or those that can improve it. For example, air purifiers can improve the air condition in people's homes; air condition monitoring APPs or air quality detectors can inform people about their living environment; industrial ventilation systems can improve the working environment for workers in mining, quarrying, and other industries; and air particulate adsorption machines can filter PM2.5 smog particles from the atmosphere to improve urban living environments, and so on.

Regarding the sensors required for air purifiers to detect air PM2.5 dust, the Luftmy PM2.5 laser dust sensor LD12 has applications in: air purifiers, air conditioners with purification functions, PM2.5 detectors, range hoods, smoke alarms, fresh air systems, specialized PM2.5 sensors, air probes, wearable devices, and more.