Barring currency, one thing that can truly be used to
value the world's wealth is gold. It brings us to an important question, i.e.,
Why is this metal so valuable?
...
Display this QR code on your business cards, brochures, posters, or exhibition booths. Potential clients and partners can quickly scan it with their smartphones to view your business information on the spot.
Created a new article.
What Makes Gold So Valuable?