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Because I haven't seen this anywhere on English speaking TT forums (only similar procedures for DHS - here is one such guide on TTnPP which seems to be outdated because links doesn't look the same on DHS and CTTA web sites) I just leave this here for mine and others benefit
Most of Chinese brands like DHS/Yinhe/Palio/729 provide today stickers with 9-24 digit codes for on-line verification (against counterfeit, black market etc.) Here is how I checked my code on Yinhe blade received from Aliexpress:
I was trying to find the link on Yinhe official website and after some time and using Google translator on sitemap I got to "Security check" link on very bottom. This leads to YISIHE website:

When you put the number from the sticker (you need to use coin or nail to peal the thin layer first
into query window you get result in Chinese:

Finally if you cannot read it then Google translate is your friend

Good luck with purchasing genuine Chinese equipment!
Most of Chinese brands like DHS/Yinhe/Palio/729 provide today stickers with 9-24 digit codes for on-line verification (against counterfeit, black market etc.) Here is how I checked my code on Yinhe blade received from Aliexpress:
I was trying to find the link on Yinhe official website and after some time and using Google translator on sitemap I got to "Security check" link on very bottom. This leads to YISIHE website:

When you put the number from the sticker (you need to use coin or nail to peal the thin layer first

Finally if you cannot read it then Google translate is your friend

Good luck with purchasing genuine Chinese equipment!
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