Product Condition New sealed in boxes Warranty& Return Policy All products comes with International warranty and 90 days return policy Delivery time 3- 5 days after sample and order confirmed . Payment. We strictly accept Bank transfer for all bulk order and quick money transfer for sample units . Refund 100% refund is guaranteed if you are not satisfied with any purchased products. Warranty Service Kindly report any fault on purchased product with proof within the warranty period and our courier service will pick up the faulty products within 7 working days for a change. Who could provide the Warranty Service? If it is within the warranty period, the original factory of the miners will be responsible for it. If it is out of warranty, we will provide paid maintenance service. What is your shipping methods We use UPS, DHL, FedEx, EMS, TNT or Reliable Door to Door Courier.