I have a D3 delivered in December 2017...in January two hashboards stop working and I send them to Hong Kong...my bad D3 stop working...I wait two months to get them back, I spend 55 euro for the shipping and 30 for thee customs, today they arrive and this is the result:
one hasboard broken for a bad packaging 

https://ibb.co/j0ZKnx
https://ibb.co/cqNGZc

DO NOT BUY FROM BITMAIN, THEY ARE VERY BAD