Hello.
Well, it's either a
Heterometrus petersii or a
Heterometrus laoticus.
There are two main distinguishing features between the species.
H. laoticus has no granlution on the carapace, while
H. petersii has some.
If you're unclear as to what I mean by granulation, basically they're small bumps on the scorpion's exoskeleton.
Here's an example with C. gracilis:
Both species lack a pronounced internal tubercle. Note that however
H. petersii may or may not possess the tubercle, however it is nowhere near as pronounced as in say,
H. spinifer. I've yet to see a
H. laoticus possess an internal tubercle of any kind.
From this you can probably decide for yourself, if you're still unsure, try to get a clear pic of of the carapace.