legal ground
Article 15 of the Regulations of the People's Republic of China on the Administration of Company Registration
The business scope of the company is stipulated in the articles of association and registered according to law. The business scope of the company should refer to the national economic industry classification standard.
Article 12 of the Company Law of People's Republic of China (PRC)
The business scope of the company is stipulated in the articles of association and registered according to law. A company may amend its articles of association and change its business scope, but it shall register the change. Projects that are required to be approved by laws and administrative regulations in the company's business scope shall be approved according to law.