20 19 How can Da Tang Huazhang tell the truth from the false?

Observe the gold thread at the bottom and laser anti-counterfeiting.

1. Observe the gold thread on the security mark. The gold thread of fake wine is printed and cannot be picked out, while the gold thread of real wine is inlaid and can be picked out.

2. Look at the rough texture of the laser anti-counterfeiting fake wine works at the bottom, but the fine texture of the real wine works is clear and layered.