/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: WilliamBang https://cdn.slidesharecdn.com/profile-photo-WilliamBang-48x48.jpg?cb=1523019283 Entrepreneur, Alternative energy source R&D company. Ph.D Economy. Permenantely stay in Seoul, Korea.