1. First, enter the electronic tax bureau, insert the CA into the computer, click the enterprise CA login, enter the password box, and click OK. Click Project Handling. After the page pops up, click the ticket type under the invoice for approval, and then click Handling at the bottom.

2. Secondly, enter the invoice type verification interface and click Next. Pull the page to the bottom, click Add Line below the information of the ticket buyer, and after adding the number of lines, select Add. In the added line, enter the name, ID number, mobile phone number and other information of the ticket purchaser to be added, and click Next.

3. After clicking Next, upload business license, ID card, invoice impression and other materials. After uploading the information, sign the CA and click Submit. After submission, a page will pop up: Your application has been submitted successfully, and it will be approved in 1 to 5 working days.