They look just like the Apeks ones.First time I ever saw these was on aliexpress.... have to cut one apart to see how it's made... its not very obvious...
Hot pressed or something...
Seems quite tough and strong...
But probably a copy of someone else's.....
Always remember my first dive torch. Didn't work. The second one worked for two dives. Third one worked a bit longer, but seemed to literally melt as the metal corroded. Forth torch was exceedingly finicky with the piezo button and broke within 5 dives. Finally gave up with cheap tat and bought a LightForMe which still works.
Agreed that not all Chinese stuff is crap. But they do jump through ridiculous hoops to copy other people's kit even if they use soft "modelling" metals and paint instead of quality alloy and anodising.
Had a lot of success with my Hi-Max strobe that survived a 70m dip and appears quite good.