Business: The ability to properly use Japanese in business negotiations and internal coordination. (N1 to N2 level, experience in studying in Japan, or having experience in Japanese-related work in Japanese-funded companies)
Experience in working in Japanese for a long time. People who have lived in Japan for a long time.
In business negotiations and internal adjustments, you can use Japanese without any problems
Have experience in studying in Japan, or have experience working in Japanese companies.
There is no problem with daily conversations.
It is difficult to negotiate, etc., and it is rarely used in Japanese.
I don't speak Japanese (here includes people who only say hello in Japanese).