If faulty on arrival, the customer will receive a entire refund promptly and no return of the miner is required. It's important to note the warranty won't deal with damage to the machines on account of misuse, failure to follow running instructions, or Bodily problems resulting from inappropriate operation. کلیه https://bitmancentre.com/product-tag/bitmain-antminer-s19-xp-hyd-255th/