Here is some details about this company
https://prod.ceidg.gov.pl/CEIDG/CEIDG.Public.UI/SearchDetails.aspx?Id=49af0425-7594-4110-9db8-50c13f8a6a5a

and there a few interested things
1. - company was registered at 1 dec 2014, 24 days is a lot time to develop chips and make prototype of miner  
2. - he is self-employment , but looking for some help to answer emails and phones   - LINK
3. - email michalkrawczyszyn91@onet.pl sugest that he was born at 1991 so he is 23 yers old now, he must be some f***ing genius if he alone develop own chips in 24days