Korbit was the first exchange to introduce BTC/KRW trading in South Korea, and it's currently active in 30 markets where some of the top cryptocurrencies can all be traded against KRW. The platform also offers a trading API that supports automated trading.
BITKER was established in Singapore as a centralized cryptocurrency exchange. Following to their outage announcement in September 2019, the exchange platform had suspended its activity. The reason behind this was a cyber attack.