The store that I bought this from just calls it a Ming Shi. It comes in a generic box that has RM on it. I've read online that its a 5000S.

Its clearly a Long Handle Merkur Progress (510) copy, but has a few small differences:
   1 - It has four small lather holes.
   2 - The twist knob is slimmer and White, versus more of a Cream on the modern Progresses.
   3 - Its numbered 1 to 9. (but runs out of adjustment at about 7½)

Its a little lighter than the equivalent Progress.
The plating on mine looks fine to me, although there have been reports of some bad plating.

Other names that I've seen: Yintal.

How does it shave?
It's mild, actually very mild.
I used it with a new Wizamet, opened it to its max (before it ran out of spring tension) and didn't get a BBS shave out of it.