They’re quality is a shit. I bought a wave+, broke within a couple months (spring in pliers broke making pliers unusable). Send it back and they say it’s not repairable so they give me a different one (mine was laser engraved). Then the replacement breaks (spring that holds pocket clip in place). I don’t even use the Leatherman that much.
And the countries you mentioned can produce quality products if the company ordering the products cares enough to demand it and reject anything substandard.
See Apple. But you better believe they have QC experts at every level and if the suppliers don’t deliver they’ll never see another dime from Apple.