Toossab Consulting Engineers Company      http://www.toossab.net/en/

Tamavan Consulting Engineers Company   http://www.tamavan.com/

Pazhouhab Shargh Consulting Company     http://www.pazhouhabshargh.com

Aria Kavand Pars Consulting Engineers       http://www.aryavand.com

Tiraj Machine company- Service providers Machines  http://tirage-machine.ir/

 Ministry of Roads & Urban Development   http://www.mrud.ir/