Margin trading in Korean exchanges

[arnold35]

As I am not fluent in Korean, it is difficult for me to understand if local exchanges offer margin trading and what leverage they have. I am also not sure if I have found all of the exchanges

Based on coinmarketcapital I have found:

bithumb
korbit 
coinone - based on coinone.co.kr/margin I understand they offer margin trading with 4x leverage

[szon0111]

I'm pretty sure margin trading is only available through Coinone (4x) at the moment.
Bithumb announced about two months ago that they'll add margin trading soon but no exact date has been announced yet.