So, this isn't a discouragement by any means, but years ago, someone on another forum had a paper from kato and kawai. I was talking about the cap iron, and he said "I have something you might like to see". It was papers from k&k (this was before any of the videos were public, etc). We couldn't read anything from the papers and he still had to get permission to publish the videos - the university just wanted credit attached to the videos (which is appropriate). Nonetheless, they were stolen and reposted all over the place after the fact as that's what youtube and other video sites were about at the time.
The person who got in contact with the university where K&K did their work found a descendant of a japanese saw dealer in the US who obviously spoke japanese (born in japan, has since gone back, and even familiar with tools). Despite that, she was not able to translate some of the kanji because it was very specific to planing.
Since your diagram is electronics, there's probably a much larger pool of capable folks, but if the kanji issue is the same, you may need someone who speaks chinese AND is very versed in how it's used in regard to electronics.
