I don't know if they're still around, but a quick search suggests that their F1 and F2 processors are for sale through a couple of Chinese channels such as AliExpress. They also have a Facebook page apparently, have you checked that out yet?
Yes, he is still producing.
I live in China and my friend owns one. Under normal circumstances it runs ok, Sometimes he has problems that are annoying. The factory can provide very cheap parts for replacement. A motherboard only costs ~300CNY (~45USD).
I think it's good for personal use, but not suitable for commercial use.