Fingerprint lock invoicing belongs to the household hardware category.

How to choose other minor categories when registering:

1. There is 1 trademark selected for registration (bell button, group number: 0920), and the registration ratio reaches 10% .

2. There is 1 trademark selected for registration (smoke detector, group number: 0920), and the registration ratio reaches 10%.

3. There is 1 trademark selected for registration (door peephole, group number: 0920), and the registration ratio reaches 10%.

Special invoices must be issued in accordance with the following requirements:

1. The handwriting must be clear.

2. No alteration is allowed. If the form is filled in incorrectly, a separate special invoice should be issued, and the words "void if filled in by mistake" should be marked on the misfilled special invoice. If the special invoice is issued and becomes invalid because the buyer does not ask for it, it should also be handled as if it was filled in incorrectly.

3. Complete the items.

4. The tickets and items are consistent, and the face amount is consistent with the actual amount collected.

5. The content of each project is correct.

6. Fill out all the coupons at once, and the content and amount of the upper and lower coupons should be consistent.