I am an African student in Yantai,Shandong Province. Currently on a students visa.

Good morning
I am as well the owner of a registered foreign trades company with office in Yantai. My school will be going on vacation next weeken and I want to take advantage of the opportunity to visit South Korea. Considering that am a student and also owner of the foreign trade company,what documents must o submit at the embassy to get a tourist type. And please recommend some tour agencies with their contacts in or around Yantai that can assist with the application.