Hi,
Hopefully we can get better suggestions from others, but consider checking with your local ASUS support for recommendations too if you have not already or maybe any local ASUS resellers that you trust.
I'm located in the U.S. and am not very familiar with the situation in the other regions, but if it helps at all, it appears we sell the 6mm 230W charger in the U.S. as below which may not work well for you if you are located elsewhere, but if you trust it (good idea to double-check if you have a way), there is a list of compatible models including more current models like the UX581GV and GX502GV that may help you track it down if it's easier to find or request chargers for them.
The part number listed on the U.S ASUS Store page will include a U.S. power cord, so do not expect it will be sold in other regions with that same part number.
https://store.asus.com/us/item/201812AM060000007/adapters-ASUS-230W-%2F-6PHI-Power-Adapter
