1. First, turn on the computer and search for "Electronic Taxation Bureau of a certain province in State Taxation Administration of The People's Republic of China" through the website, then find official website in your province in the search results, and click the "Electronic Taxation Bureau" program option after opening it.

2. After that, in the opened "Electronic Taxation Bureau" program page, find the "I want to do tax" program option of this page and enter the "I want to do tax" program option.

3. After that, the system will automatically jump out of a "User Login" box. If there is an account, enter the account number and password to log in. If there is no account, click the "Real Name Registration" program option in the lower right corner to register the account according to the prompts.

4. After successfully logging into the account, click Enterprise Tax, add the enterprise to be queried, and add the enterprise's tax identification number. If you don't know the tax identification number, you can log in to the national enterprise information publicity system and enter the enterprise name for inquiry.

5. After that, in the opened program page, click the "My Information" program option, then select the "Taxpayer Information" program option in the opened options, and then click "Owner Information". The owner information shows the information of the company's financial controller. In this way, we can know whether the financial controller of the company is you.