1. Open a browser and search for State Taxation Administration of The People's Republic of China, People's Republic of China (PRC).
2. After entering official website, State Taxation Administration of The People's Republic of China, China, find the tax service platform from the drop-down page.
3. Find and click "Invoice Inquiry" in "Tax Inquiry" at the top of the page.
4. Enter the invoice query page and enter some key items such as invoice number, invoice date and invoice amount.
5. Click Check, and in the displayed special ticket page, check the invoice code in the upper right corner.