We can according to your request print the black mark for you.
NFC library tags
There are three types of NFC tags: wet inlay, dry inlay, and paper label stickers.
1)The clear dry inlay is the simplest and cheapest one. Dry NFC inlay
2)without adhesive is used as the component for larger products. The wet NFC inlay is clear but has an adhesive backing and acts like stickers.
3)The NFC paper label sticker has adhesive on the back and allows the print of the logo QR code and numbers on the front.