I have been trying to follow what’s going on here from the scant detail provided by OP - not made any easier by the OP now only writing in Chinese.
OP says - “Yes, it is Mr. Zhang’s imitation in China, and its name is YE Ultra.”
There are sufficient red flags for me not to follow up on this as a purchase and the bulk of the electronics boxes and thick cabling would def not work in my kitchen, but I did find this post on CoffeeSnobs.Au from an actual purchaser of one Zhang imitation (but not necessarily the one the OP is selling), which may shed some more light on the grinder for those who have not seen it - Ultra review
