i have a KEB Global card. it has an orb in the center with a wavy-checkered pattern. I used it in the USA, Thailand, Laos, Cambodia, but an ATM took it away from me in Spain. It only works as an ATM card abroad, no online purchases, no store purchases.
I have used it in Korea to shop in stores and online.
I don't think that a KEB credit card will do you much good. Unless you have worked at your current job for a year, you have to put down a 1.2mil deposit that you don't get back unless you cancel the card.
A much better option would be to set up online banking. I have two accounts with KEB, one is for transferring money to my American account. When I transfer money from my main account to the transfer account, the money goes into my American account, minus a transfer fee, which you would be paying if you wired money with a clerk. I'm sure you could link it with your bank in a different country.
You can definitely get your money out of the country even if you aren't here, and no need to carry around tons of cash.
'FX' would be foreign exchange.