1. Click on Taobao first, and click on my Taobao in the lower right corner. There is a necessary tool in the middle. Click on it and move down. The subtitle is "My Invoice" in other services. Click on it and you should have your catering invoice certificate.

2. First of all, there are two types of catering: machine-made and quota, which need to be officially issued by relevant departments and stamped by the actual buyer. In addition, you should generally obtain it through formal channels according to actual consumption.

3. The catering invoice is a special invoice for the catering industry. Invoice refers to the written proof of receipt and payment provided by all units and individuals in the purchase and sale of goods, provision of labor services or acceptance of labor services and other business activities. It is the legal certificate of financial revenue and expenditure, the original basis of accounting, and an important basis for law enforcement inspection by audit institutions and tax authorities.