Legal analysis: the enterprise registration number should be the registration number of the enterprise business license, and the three certificates are all the same number after integration. The registration numbers of current business licenses in China are all 15, and since 2007, the state has comprehensively upgraded the registration numbers, all of which are 15. The meaning of registration number 15 digits. The code structure of industrial and commercial registration number consists of 14 bit ontology code and 1 bit check code, in which the ontology code consists of 6 bits of first registration authority code, 8 bits of sequence code and 1 bit check code from left to right. The so-called "three certificates in one" is to combine the industrial and commercial business license, organization code certificate and tax registration certificate that enterprises apply for in order to improve market access efficiency; "One photo and one yard" is a further step on this basis. Through "one-stop acceptance, parallel approval, information sharing and mutual recognition of results", a department issues a business license with a unified social credit code.
Legal basis: Article 7 of the Company Law shall issue a business license to a legally established company by the company registration authority. The date of issuance of the business license of the company is the date of establishment of the company. The company's business license shall specify the company's name, domicile, registered capital, business scope, name of legal representative and other matters. Where the matters recorded in the company's business license change, the company shall register the change according to law, and the company registration authority shall issue a new business license.