The ESP USA's are mainly made in USA, although I understand some are MIJ. The ESP Custom Shop ones are MIJ. The LTD's used to be mainly Korean, can't say anymore.
This one is a MIJ Custom Shop deal. (I went back and checked, SW listing says "KH-3 is handbuilt in ESP's Custom Shop in Japan"). They won't ship for months.
the EC1000, EC500, and EC400 line, mostly are made in Korea, but some have transitioned over to Indonesia too now. Wont be surprised if some are also transitioning over to China.