Electrician's certificate itself is a special professional qualification certificate, so it is universal in the whole country. Some places adopt local protectionism and refuse to recognize electrician certificates in other places. Mine maintenance electrician certificate is a kind of electrician certificate, which is only used in mines, because the working environment of mines is different from ordinary places and has certain particularity. If you don't work in the mine, I suggest you don't take the electrician certificate in the mine. I hope it helps you!