if you want to sell Bitmain coupon(more than $200)
pls contact me
And we buy it on Alibaba Trade: https://www.alibaba.com/product-detail/Buying-Bitmain-s-coupon_60775215319.html?spm=a2747.manage.list.4.644e71d21KCA7D
contact me on Alibaba
or
wechat: 15812459768
service@bit-winkor.com