Hi Michael,
I'm not taking sides here, but it seems that some points have been raised which, if SmallSMT were my company, I'd consider it a priority to respond to.
What is, and over time has become, perfectly clear, is that there are many contradictions in what is being said (including by yourself - not just in communication with 'others'), which only serve to make things perfectly unclear.
If you have good answers, or even mediocre ones, then, simply providing them to the satisfaction of those with interest, should solve these issues and calm everything down again.
I must say that I am totally confused about your business model, what you 'actually' do, whether any of the Yushengtech IP is actually yours, and what formal relationship you do, or don't, have with this company - compared for example with the other seller of this machine on Taobao.
I'm not sure 'who' said it, but there's a well tested argument in sales that goes something along the lines of 'The Customer is Always Right'. You may not agree, but it's a proposition that's worth pondering on for a little while at least.