I have done a lot of research about
https://bittech.cn.com/No real products, custom case with 3 miners inside.
Photoshopped pictures:
Jihan Luo Founder, CTO (FAKE NAME AND PHOTO)
Alexsandr Maiorov CEO, co-founder (FAKE NAME AND PHOTO)
Hans Krüger CMO (FAKE NAME AND PHOTO)
Sun Wei COO (FAKE NAME AND PHOTO)
I believe they are the same scammers from Syanmining
SCAM BE CAREFUL.