@vallera - send me your e-mail via pm for further details...
Hi, May i know does your 420USD coupons still there?
We are looking for bitmain coupon $140 $200 $220 $250 $350 $420 .
We will pay for them if you willing for sell.
My email:
manager@winkor.comwechat: whatsapp: 0086 15989304391