The quality of assistance Here's outstanding. My get was processed swiftly, and the shipping arrived by the due date. Every thing was accurately as advertised. For those who haven't received your refund but, you should check your Paypal or copyright account initial. It might get a while for your refund https://antminer-bitmain-s973941.ampblogs.com/antminer-bitmain-t21-no-further-a-mystery-71234554