1. Log in to Health Liaocheng official website or APP and find the purchase order.

2. Click on the order details to find the invoice information.

3. The order has been invoiced. You can directly click "Print Invoice" to print.

4. If the order is not invoiced, you can click "Apply for Invoicing", fill in the relevant information, and print it after invoicing.

5. When you buy goods or services in a healthy Liaocheng store, you can ask the clerk for an invoice. You need to provide valid proof of purchase and personal identification, and the store staff will issue an invoice for you and print or mail it to you on the spot.