That makes sense. I don't have a recommendation, but as the other person stated, if it doesn't need to be understood in the US (since its going to Taiwan) wouldn't any notary do? You can just call and see if this is fine?

Similarly, I once had to do foreign-language paperwork for stuff in a foreign countries, and they required I either show up in person or have a proxy go on my behalf, so maybe you need an on-the-ground attorney (or PoA of your own) to execute this? Sorry, this is more me thinking vs knowing the actual answer. Good luck!