1. Procedure for replacing tax control panel: 1. Contact the tax control unit. If it still cannot be operated under their guidance, it will be handed over to the designated place for inspection. If it doesn't work, you will ask for a replacement. 2. Taxpayers need to bring tax control equipment, original and photocopy of business license, official seal and ID card of the agent, and the remaining blank VAT invoices to the main tax authorities for modification and issuance.

2. Precautions for changing the tax control panel: 1. If the general taxpayer needs to change the tax control panel, please do it after filing and writing back, so as not to affect the enterprise's declaration of value-added tax. 2. Before changing the tax control panel, please ensure that all invoices have been uploaded to the tax bureau. 3. If there is a blank invoice that has not been invoiced, please record the invoice code and the number of the number segment. After the new panel is issued, please ask the staff of the tax bureau to make blank invoices by hand. Read the new invoice again. The remaining blank invoices need to be verified by the tax bureau. 4. The billing computer copies the tax control panel and re-releases the file to the USB flash drive, which is used to restore the ticket data of the billing system to the tax bureau. 5. If the invoice has been issued this month, please bring the tax control panel to the tax bureau to copy the invoice data of this month (non-collection period), and the invoice will not be issued on the day of copying, because the copy can only be sent to the day before. Avoid data omission. 6. After replacing the new disk, go to the tax bureau and ask the tax officials: ① issue a new disk; (2) reissue the tax control panel and use a USB flash drive with supplementary documents; (3) manually return the blank invoice and re-read the new disk; 7. After the new disk is issued, return to the billing computer, insert the tax control disk and USB flash drive, and let Baiwang personnel recover the data remotely.