Siaf will NEVER EVER get a fair market value as long as they are listed in the US!! Period!!!
That isn't true. Let me tell you a story about FTFT (fka SPU)
In 2016 some Chinese entity, I think it was the government, made an investment one of SPU's subsidiaries at a much higher price than what the shares were trading at. I think the implied value was something like 8x higher. And the P/E was something like 2 at the time. So they were paying a P/E of 16 effectively.
It happened twice actually, two deals, in June and July of 2016. You can see some small spikies in the chart. I bought some shares after they announced the first deal. The share price didn't go up because a big institutional investor was unloading shares. Even (especially) 1 day after the news! I figured, what the heck, it still needs approval and I don't think they will get it, so I'm selling. If this news can't get the share price up, then the China sector is really dead and nobody cares.
But the share price did go up, weeks later. And look where it went.
The reason why it came down afterwards is because I was right from the start. The deal didn't pass eventually.