The catering industry is different from other service industries, and it combines the two. The sales of manufacturing industry usually includes three links: production-inventory-sales.

The service industry has no production and inventory, and only sells intangible goods. We usually think that the catering industry sells not only tangible goods, but also services, and its sales process is production-sales, without inventory. Therefore, the catering industry is an industry that pays equal attention to production and sales, and intangible services are sold together with its goods.