· Reporter of the JoongAng Ilbo and HanKook Ilbo (Correspondent of USA))
· CEO of Ereccom Co., Ltd.
· CEO of TTS Co., Ltd.
· CEO of Daesung P&H Co., Ltd.
· Grand prize candidate of the Electronic Times SW products in The  Federation of Korean Information Industries
· Constructor of the SI system of the driver's license examination
· OMBI (Italian company specialized in manufacturing machines related to the  jewelry industry) Agent
· Host of the Comprehensive Mechanical Exhibition of Precious Metal,  supervised by the Italian Embassy
· Construction promoter of the electric generation corporation of  Jindo and Kodeco Indonesia
· Yemen cogeneration plant 100 MW contract (1 trillion KRW) dealer
· Collaborator of the Korean business project with the Harbin Engineering &  Technology Group of China
· Korea's agent of TEGEE, the largest detergent company in German