HK3DTech offers 3D-printed NFC keychains combining personalized design with convenient information sharing.  They offer several design options:
  
12 Chinese Zodiac Series:  Each keychain tells the story of a zodiac animal.
  
12 Constellations Series:  Each keychain highlights the personality traits of a constellation.
  
Custom Designs:  Unique patterns and content can be created to meet specific needs.
The NFC functionality allows for various applications:
  
Educational Applications:  Store teaching materials for easy access.
  
Contact Information Sharing:  Quickly share contact details.
  
Corporate Promotion:  Share company profiles or product information.
  
Fan Support:  Share links to favorite idol's work.
These keychains offer customizable designs, easy information access via NFC (simply by touching with a compatible phone), high storage capacity (URLs, images, videos), and strong security against information leakage.  Their durability makes them ideal for promotional and informational purposes.  

Click here for more information and a free quote.