1 equipment differences
If it is a 3% business tax controller, then you have a box connected to the interface of the computer motherboard, and the invoice you bought will also be indicated.
17% is the VAT tax controller, which is a small card reader connected to the PCI slot of the computer.
2 invoice variance
3% is a unified invoice for commercial retail or construction.
5% of the business tax is the service and entertainment industry invoice.
17% is a special VAT invoice and an ordinary VAT invoice.
3 Payment balance for equipment purchase
3% optical tax controller and backup USB flash drive are around 2260 (optical tax controller is 1580).
17% has training fee, first-year service fee, IC card, golden tax card, etc. At 2800-3500 (prices vary from place to place).