Due to the geopolitical situation, South Korean military has invested a crazy amount of resources on firepower. It has 2,780 self-propelled artillery vehicles, which is number #3 in the world (after Russia and China). The US (#4) has 1,521.

For a random comparison, Poland has 593 and Germany has 134.

(source: https://www.globalfirepower.com/armor-self-propelled-guns-to... )

...that is, (depending on what you want) South Korea has proven experience in building a ton of military equipment on time. Also, due to the dreadful climate of Korean peninsula, if something works in Korea, it will work pretty much everywhere except for desert (and maybe the arctic).