This company has been registered under the name of SHAHRAB ZIST Consulting Engineers Company under Reg. No.218544 in Tehran on March 15 , 2004 . The objectives of this company is different fields including Studies, Designing & Supervision on the projects of water supply, reservoir tanks and transfer, distribution networks and water treatment plants, sewage collection networks, transfer lines and sewage treatment plants, irrigation & drainage networks, gathering and leading and removing superficial waters and studies in relation of environmental management and design , installation and operation of online monitoring and process analyzing for water and wastewater treatment plants and stack and exhaust gas and also designing green space irrigation networks, this company is also active in the field of surveying and retrofitting and studies, designing and supervision on geo-technique.