Country code: +82
Business directory in Korean. Type in your search request in the box at the top of the screen and click on the search button on the right. There are also categories to choose from below and a number of other short cut options. Not all of these work and come up with errors. The site is also quite messy to navigate and the results aren't always clear.
Business directory. In Korean - enter your search term (it accepts English) in the top box and click on the red search button on the right.