On the way to PetroChina, select the order to be invoiced, enter relevant invoicing information, and click "Submit Application" to see the corresponding invoice that has been applied.

1, click the invoice.

Enter PetroChina Youtu APP and click "Invoice" on the homepage.

2. Select an order

Click the order that needs to be invoiced in the page.

Step 3 submit an application

Check the invoice type, enter the relevant billing information, and then click the "Submit Application" button at the bottom.

4. Click OK.

Click "OK" in the billing header interface.

5. Invoice

Click "OK" on the billing prompt page. After the page jumps, you can see the corresponding applied invoice in the interface.