What can hotels do in the manufacturing line, by-product line, sales line, and service line?

Mainly the service industry in the service line.

With the rapid development of the tertiary industry in our country and the improvement of people's material and cultural levels, the development of the hotel industry in our country is even more remarkable. Hotels have emerged to meet people's various needs, and now for the hotel industry. Travelers occupy an absolute market. All services in the hotel industry are more centered around the needs of travelers.