Dena Rahsaz construction company, as one of the most reputable companies active in the field of construction has executed and completed numerous of significant projects in Iran and aboard. Dena Rahsaz construction company is a well-known exporter of the technical and engineering service in IRAN witch has been elected as the exemplary exporter of Iran in calendar year 2003, 2005, 2008, 2013, 2014 and 2015. The major activates of Dena Rahsaz construction company as a construction of superhighway, freeway, flyover junction, dam, irrigation contactor are: system, executing the gas, oil and water pipe lines, tunnel and building construction. Dena Rahsaz company has been awarded the highest rank from state planning and management organization in the fields of transportation, building, installment and water equipment and since it was founded besides using the modern management methods aimed at utilizing the credible international standards and the effective situation, it has strived in the construction activates, thus being considered as a premier complex too. It is noteworthy appropriate to mention is planning and executing the above mentioned projects in different EP and EPC and also EPCF methods.