We offer a 30-working day guarantee on the purchase of all our refurbished products. Delivery rates, customs service fees, and taxes aren't included in the retail price tag revealed above. We now have the following payment techniques. You can notify our sales Manager which payment you prefer and total it. https://antminercontrollboardsfor61193.pointblog.net/getting-my-antminer-control-board-repair-to-work-84579962