1. Log in to official website of Qingdao Customs or related data companies and enter the data query system.

2. Enter the user name and password to log in.

3. Enter its query keywords in the system, such as company name and product name, to search.

4. The system will return relevant data results, which can be downloaded or printed.

It should be noted that some databases need to be used for a fee, and some data cannot be obtained in real time, so it is necessary to wait for data update.