The season of smog has returned. Nakhon Sawan dust rises to the number one country in the country We let our children go to school and live a normal life without warning that the air we are using is very dangerous. and no one warned us Therefore, we want to run to raise funds to buy a PM 2.5 meter installed in various schools around Nakhon Sawan. The goal is 30 if we say that Sawan was the beginning of the North. Therefore, we want Nakhon Sawan to become the starting point of supporting what we are doing spread throughout Thailand.