i think Yifu - Bitsyncom cant deliver the chips, because they have no chips 
+1
This is the payment address for chip orders: https://blockchain.info/address/1FGAftzSTztFSB8LMwsrdCKTyqGY6zr3sU
It currently has a balance of 75,779.8 BTC with no withdrawals.
So doesn't it look like they haven't paid TSMC for chip production?
Yifu doesnt have to pay much for the chipproduction. They earned enough money from the miners before so they dont need to use the money from that address.