Centering around “ANTMINER”, BITMAIN cooperates with excellent suppliers to supply buyers and copyright mining sector with highly aggressive services. Gratifying our prospects is critical to us and we've been sorry our products didn’t fulfill your anticipations. Underneath are the small print of our refund and return coverage on your reference. https://antminerbitmainl326802.buyoutblog.com/34554883/antminer-bitmain-s19j-pro-can-be-fun-for-anyone