the difference is that the supervision methods and requirements are different.

The red light industry includes food, catering, chain stores, epidemic prevention, funeral and burial, religious affairs, liquor, etc. The yellow light industry includes clothing and furniture, public appliances, home improvement, etc. Industries cannot be declared on the main board, but the head enterprises in the yellow light industry can declare.

At present, among the more than 211 companies in the IPO queue, there are still many companies in the catering industry, and the companies listed on the main board and in the fields of liquor epidemic prevention education and training are not among them.