/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ChaiE29CVE https://cdn.slidesharecdn.com/profile-photo-ChaiE29CVE-48x48.jpg?cb=1523642591 สิทธิชัย à¹�ววเà¸�à¸�ี