How to prove that two companies are affiliated companies?

Legal subjectivity:

Go to the industrial and commercial bureau to inquire about the detailed information of the two companies, see if there is any equity relationship in the economy, and see if the legal representative and other shareholders are the same or have interests. Companies, enterprises and other economic organizations with one of the following relationships are affiliated enterprises: there is a direct or indirect ownership or control relationship in capital, operation, purchase and sale; Directly or indirectly owned or controlled by a third party; There are other related relationships in interests.

Legal objectivity:

The relationship in Item (4) of Article 271 of the Company Law refers to the relationship between the controlling shareholder, actual controller, directors, supervisors and senior managers of the company and the enterprises directly or indirectly controlled by them, as well as other relationships that may lead to the transfer of the company's interests. However, state-controlled enterprises are not related only because they are controlled by the state.