Kore says they manufacture in "Asia" without specifying the country in order to pass the savings on to the customer.
Approximately question 50 of approximately 55 on their FAQS section:
https://www.koreessentials.com/pages/faqs
"All of our products are designed, proto-typed and tested at our offices in San Diego, California, USA - and manufactured in Asia. As a matter of fact, 95% of all apparel sold in the USA is manufactured in Asia. Doing so enables us to save a substantial amount of money that we pass on to customers. As Americans, we would prefer to make our belts in the USA, but unfortunately it would cost an estimated 2-3 times as much and we couldn't locate a facility that was willing to do it. We understand there are those who would pay more if it were 'Made in the USA' - but most of our clients appreciate the lower prices and savings."
At 60ish for a nylon belt with a "potmetalesque" buckle, I would respectfully assert better belts that can take a heavier load are readily available at a substantial savings -Made in the USA. Mastermind/Graith and the Wilderness are two brands that come screaming to mind.
At 60ish for a "Top Grain" leather belt which is glued over a piece of polymer to support the weight of a gun/mags etc, I would also respectfully assert that there are likely dozens of Made in the USA belt belt beltmakers who are making "Full Grain" belts for 10-20 more that are can take a heavier load as well with a much longer guarantee.
If the budget is driving the train, the Made in the USA Biothane belt listed above at 39.99 would be a way to go.