$ {0} $ {1} $ {2} $ {3} $ {4} $ {5} Soil Technical and Mechanical Laboratory Company is one of the subsidiaries of the Ministry of Roads and Urban Development with over 40 years of experience and experience in the form of 31 provincial administration, 145 laboratory branches in large cities, 900 local units, 40 geotechnical research teams, and presence in large and small dams studies and quality control; With the presence of more than 2,500 specialist, technical and engineering staff, a wide range of services in construction projects. Soil Technical and Mechanical Laboratory Company is one of the subsidiaries of the Ministry of Roads and Urban Development with more than 40 years of experience and experience in the form of 31 provincial administration, 145 laboratory branches in large cities, 900 local units, 40 geotechnical research teams and participation in large and small dams studies and control; With the presence of more than 2,500 specialist, experienced technical and engineering staff, a wide range of services in development projects and. {6}