/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ChanwoongYu https://cdn.slidesharecdn.com/profile-photo-ChanwoongYu-48x48.jpg?cb=1523541434 저는 유찬웅입니다. My name is Chanwoong Yu Mi chiamo Chanwoong Yu Grazie.