Soroush Darya Pey (SDP) Engineering Company was founded in 2007 by Prof. Abbas Soroush, a faculty member of the Amirkabir University of Technology (Tehran Polytechnics) and Mohammad Soroush. The company started with consulting, design and supervision activities of Geotechnical Engineering projects. SDP with a team of young experienced professionals graduated from top universities was able to become one of the most prominent and reputable geotechnical companies of Iran in a short period of time. SDP with continuous development, fulfilled about 50 EPC projects. SDP extended its activities by entering the field of the monitoring and instrumentation of different geotechnical projects. At the present, SDP is one of the most prominent companies of Iran in the field of the geotechnical behavior evaluation of deep urban excavation and large dams and provides instrumentation services by having representation of GLOTZL German company. Additionally, SDP provides services of QC and pile tests including PDA, PIT, PDM, EOD, restrike test and etc.