catering service industry.

the industry category of catering industry should be filled in as catering service industry. The catering industry itself is an industry category, and the catering industry belongs to the service industry. Therefore, the industry category of the catering industry should be filled in as catering service industry. Service industry is a big industry category, including many kinds, and catering service industry is only one of them. The industry category of the catering industry is filled in according to the catering service industry.