operation and maintenance of Karaj to Tehran facilities main water supply pipeline

 Maintenance services, pipe repairs and installations of steel and concrete lines of Karaj water to Tehran
maintenance services, pipe repairs, installations and splits of steel lines, concrete raw water and rebuilding of lines and branches, landscaping and rebuilding of the
relevant buildings from the reservoir of Bilaghan to the 108th hut and the refinery, along with the supply of tools for machinery and all fittings And Karaj water
supply lines to Tehran