We are sorry to hear about your bad experiences with Hashfast. The thing is we are only buying the ASICs from them. The boards are manufactured in Romania, in a facility near us.
I understand you only get the chips from them, but they are not delivering them to customers who already paid. Look at their track record.
So if they are willing to screw over all their initial customers, what do you think they'll do to you? Sure, you'll get a few samples, but the day you plunk down USD 200k for a batch of ASICs, you'll end up with a load of excuses why their chips can't be shipped. And you'll be like all those who prepared PCBs for the Avalon chips: stuck with a load of useless PCBs.
Worst, you might have already made promises to your own customers you can't fulfill