1, the bottle cap is changed into a bulge on the head of the wheat ear, which is very concave and convex when touched by hand.

2. Look at the bottom edge of the bottle cap, which is smooth and tight with the bottle body without burr. Many fakes are fake bottle caps, so we mainly start with bottle caps. )

3. In the method described above, use your mobile phone to enlarge the picture on the top of the bottle cap to see if the picture is bright and the red-green boundary is clear. (such as counterfeit goods with blurred boundaries)

4. Look at the bottle body again, mainly depending on the color and font of the label (taken by mobile phone) and the back of the label (printed with glue). If it is machine brushing, it is horizontal and parallel offset printing. If it is hand-brushed, it is a fake. At present, it is found that the back is printed with strip patterns and painted with glue, so you can look for it carefully.

5. Illuminate the old front label with purple light, and you will find a gray-blue cow head under the words Niulanshan. Moreover, this trick can not only identify white bottles, but also identify 46-degree cows, such as 56-degree bottles and 65-degree bottles.

Extended data:

Niulanshan wine takes high-quality sorghum and wheat as raw materials, and Daqu made of peas and barley as starter medicine. Pure grain is green and natural. From raw material crushing to finished wine filling, it is brewed through more than ten key processes such as gelatinization, fermentation and distillation. Represented by the fragrant Niulanshan brand, there are more than 1 10 in the four series.