際際滷shows by User: ywjye / http://www.slideshare.net/images/logo.gif 際際滷shows by User: ywjye / 際際滷Share feed for 際際滷shows by User: ywjye https://cdn.slidesharecdn.com/profile-photo-ywjye-48x48.jpg?cb=1523371666 Certified Energy Manager Year 2015