Another new pistol of unknown designation (the two on the left), along with the just unveiled QSZ193 and its magazine. The submachine gun is CS/LS7.
The two pistols to the right seems to belong in the same family, but have different lengths. The top right one seems to be a bit longer than the bottom right one (if you count the number of rail space on the bottom of the gun, one is a bit longer than the other).
QSZ193 is also quite a bit smaller than the bottom right gun, and its designs are quite different (striker fire instead of hammer).
The 3 pistols have quite a bit of common design features, which probably means that all 3 are designed by the same institute (208 I assume?).
Common features that I can observe:
1. all 3 have ambi slide release
2. all 3 have 2 sets of grooves that can improve friction on the slide, one at the front and one at the back
3. all 3 have very similar slide disassembly mechanism (notice the circle right above the trigger? On the other side of all 3 pistols, the left side, there should be a lever that can be used to detach the slide from the frame. Since this circle seems to be of the same size for all 3 pistols, I assume this part is probably interchangeable)
4. All 3 guns seem to have a barrel that is of the same color (a metallic color)
5. (not 100% sure about this) all 3 pistols seem to have a ambi safety selector at the upper rear part of the frame
6. All 3 guns seem to have ambi magazine release
7. The magazine of all 3 pistols have a pronounced base plate