How much does it cost to go to Japan to do factory electrical debugging, from low voltage to high voltage? . . .

If the factory electrical debugging in Japan is competent for low-voltage and high-voltage work, the technology should be comprehensive, and the income will be around 15000 to 20000/ month if the level is equivalent. We have a friend who is doing mechanical debugging there, and the salary is 15000 to 18000/ month.