Second-hand refurbished Whatsminer 20s

Play a wave of advertising, home (HiYomei) repairman renovated Whatsminer 20s, refurbished technology of high quality, after-sale guarantee, the key is quality and cheap, if interested partners can go to the home page to find our contact information.  
Limited quantity, first-come-first-served, want to buy as soon as possible, support express delivery to the world.