/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: mohammedtahahussein https://cdn.slidesharecdn.com/profile-photo-mohammedtahahussein-48x48.jpg?cb=1530215309 Im water treatment engineer specialies in treatment of chillers , cooling towers , steam boilers includeing chemical cleaning of each one