1. Log on to the website of Jiangsu Electronic Taxation Bureau.
2. Find "I want to do tax" on the website, then select "Invoice Use" and click "Network Billing System".
3. In the online invoicing system, find the option of "Invoice immediately" or "Fill in the invoice".
4. On the page where the billing information is filled in, check the invoice code and invoice number to ensure accuracy.
5. After filling in the billing information, click "Invoice Preview" to see the billing preview effect.
6. Click "Print" after confirmation to issue the invoice.