Please be careful to not consider any impostors, you should check our suitable Make contact with facts and beware of getting deceived getting scammed, and getting rid of dollars. you should Test our correct contact way: Here A：Hi there, thanks for your personal concept. Remember to get in touch with https://antminer-controll-boards59371.amoblog.com/the-basic-principles-of-bitmain-control-board-59310360