What do the numbers on the official seal of a five-star hotel stand for?

The number on the official seal of a five-star hotel represents the security code of the official seal.

The number below the official seal is an anti-counterfeiting code, with a total of *** 13 digits. Among them, the first four digits are the area code, which corresponds to the first four digits of the hotel business license. The last three digits are the numbers of companies with official seal engraving qualification, and each company's number is unique. The six-digit number is the serial number of the company that engraved the official seal, which is used to identify the engraving order of the company. The existence of numbers can play the role of anti-counterfeiting and identification, and ensure the authenticity and legitimacy of official seals.