Dorrin Mass Construction Company (DMCC) was founded in 1999 and has completed more than 100 large infrastructure projects in the last 22 years. The company has the highest rank in various fields of management and planning. Gaining golden inventions from Geneva, Switzerland, and selecting the four best concrete projects of the country from the projects implemented by DMCC during the past four years, as well as recieving over 80 national and international certificates and diplomas, are amongst the honors gained by this company. With more than 300 heavy and semi-heavy machinery, the professional and active engineers team, with the use of advanced software and software management and QA-QC, is capable of integrating all infrastructure projects into to do. In recent years, Dorrin Mass construction company has been able to attract several finance projects through the international network of financial institutions and banks, and is investing in new energy (wind and solar) and developing export of technical and engineering services outside of Iran.