The only thing I can find is in this thread where forum member Snowballx mentions them in his post

Quote - “ for my experience of cryptominerbros they showed me a tracking number on Saturday, November 21, 2020 at 11:45 and still Shipment information received nothing new FYI I placed an order on 17th of Nov and keep trying to reach with them via email Han is doing good replaying my emails but still don't know where is my shipment so far and why it's still not moving, one more thing to know cryptosupply.de changed the price even after am paying via BTC so I asked for refund and we're waiting for the money to get back to the bank account. hope my experience may help you too.“

Not sure what the connection is , but it may help you a bit ??

https://bitcointalk.org/index.php?topic=5290311.0

I'm starting to guess that you just want to post that website that you might be affiliated with. But if by chance that you're really a newbie. Don't buy miners to the websites or suppliers that you have no idea about. There were people that have been scammed by believing that those websites were really a supply of asic miners.

Just go to bitmain or any legitimate supplier or distributor of miners that you're interested to buy.