1. 1. Open the Guangdong Tax App, enter the mobile phone number, password verification code to log in, and select "Personal Entry": 2. 2. Select "I want to do tax" and "VAT" on the left side of "Processing Matters" Ordinary invoice" 3. 3. Fill in the invoice information, fill in the other party's company information (fill in the tax number and other information will automatically appear), and the invoicer's information will automatically appear after the real name is completed.