Whatsminer M21S-56Th/s

1.  No refund ,No goods return back after paid .

2.  The Miner Machine have 180days warranty and guarantee period.

3.  Because Market price instability factor , the product price maybe will change in anytime , so we will not infor each day and will asking increased price in order place time ..

*  the final price only after received order 100% payment then confirm.

1.  The Miner Without authorization to disassembly Machine / Without authorization to change or Replacement device .

2.  Lightning stroke / Voltage surge / Damage caused by inferior power supply

3.  Inflow water、Damage caused by damp and corrosion of circuit boards and components

4.  The circuit boards burned or burned；

5.  Over Clock

*  Please contact with us as soon as possbile if you get the thing happened above . we will help you to solution within short time and tell your our service center the location nearly you.