What is E7 visa ?
Transferring an E7 visa to another company directly is not easy
If you haven’t got your salary or you got assaulted then it might be possible
I’d like to recommend you to change your E7 visa to D10 visa first
Because if you fail to transfer from E7 to E7 once , then You will have very low chance to get an E7 visa again
Therefore I’d like to recommend you to change it to D10 visa first