About us The YONTEM was established in 1996 and worked on many projects in the state and private sectors successfully. Our company’s most important principal is to be able to finish the work on time without compromising quality. The company has worked on several foreing projects in the black sea region,gaining valuable teachnical knowledge. Thanks to these projects;YONTEM has become an expert in issues of Healthy and Safety. The UMSALCO Consulting and Engineering Company is a member of our group of companies and offers consulting services national and international. Our Company has a strict policy of ’’Zero Accident’’ at work. Ümit EMINOGLU Chairman of the Board