Thread Locker: Does Lion Steel Use Thread Locker at the Factory? Recommendations?

[highspeednodrag]

Does the Lion Steel factory use thread locker when assembling knives?
I'd like to know as I have a beautiful fixed blade M4 and might, some day, want to remove the handles for cleaning.
Should thread locker be used in reassembly?
What kind of thread locker should be used?
What strength of thread locker should be used?

What about for other knives like folders?

Grazie