Tunnel Sadd Ariana Company was established in 2007 with the cooperation of some experienced engineers and managers based on their valuable experiences in different civil projects. This company reached the highest rank of construction from the organization of management and planning in the specialized field of hydraulic (grade 1) and road (grade 1). After some years from establishment, this company changed into a construction corporation with various professional company branches. This is due to the concentration on presenting the qualified services, professional commitment, frequent attempts, quality upgrading , decreasing the costs and operation time, and applying the latest updated methods as well as employing the efficient personnel.The head office of Ariana Group has been located in Tehran, Iran. Each branch of Ariana Group is working independently under an integrated management as follows: Samanian consulting engineers, Tajican Company (engineering, designing , and consulting), Tunnel Sadd Ariana Company (providing constructing urban projects in Tajikistan) and International Ariana company (in charge of export and import services).