There are Juan fire prevention centers all over the country. This unit always asks customer service to call all enterprises and factories and tell them that they are willing to do fire prevention education. It also implies that this is a government agency, and they are also giving fire prevention training to all government agencies. Then they will give you voluntary fire prevention training drills, but they will sell you fire prevention equipment to make a profit.

I have received telephone sales before, consulted the local fire brigade, and got this answer.

It's just a fraud unit, and the customer service calls just to fool others, so don't go.