Ha Sung-dong joined a company Hyundai in 1992 and has led the development of seat design for Hyundai. In 1993, He had designed his first task the Seat of Avante and have led seat design Hyundai Tiburon, Hyundai Sonta, Hyundai Equus. These days he is still lead seat design for instance Palisade and Genesis. He designs it with his design philosophy, It is that design should be shared with various environmental phenomena and through various fields and communication, we act with design thinking and vision, it should be connector of network; 'society and society', 'society and human', 'human and human' and design, from the past to the future, will be together and will be died with us but design don't disappear from the history, so it was sustainable and alive.