If an enterprise produces masks that meet the export requirements, it can export them, that is, it can declare tax refund according to the process of tax exemption and refund.

The tax refund is divided into the following steps: 1. Inquire about the special VAT invoice (issued by domestic suppliers)/special payment book for import VAT (issued by customs at the time of import) on the comprehensive service platform of VAT invoice for tax refund. 2. Collect relevant documents, input data through the software developed by the teacher's company, and submit data packets to the tax refund authority through the electronic tax bureau. 3. After completing the declaration, after the declaration data is approved, you can get the tax refund at home.