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How does the ve of Yangshengtang distinguish between true and false?
The first is to look at the color inside. Yangshengtang is that kind of clarity.

Then it has the same anti-counterfeiting method as RMB, that is, it uses ultraviolet rays to irradiate the lower part of the bottle with a short message anti-counterfeiting label, and you will see the words Yangshengtang.

There is also a message to check the authenticity, and its bottle says how to send it.