Gemsan A.Ş. is a contracting company that provides services on building turnkey industrial establishment projects and the sub-disciplines of such projects both in Turkey and Abroad. EPC tank storage tank vendor. Pipe prefabrication. Our Vision; is to rank among the world's leading construction companies with our experience and background, by applying the state of the art technologies and innovations in building industrial establishments. Our Mission; with the advanced technology and engineering support in the area of industrial construction, GEMSAN provides services in accordance with its customers' expectations and international norms, within the scope determined in HSE and Quality Policies.