Roof Truss Company is a manufacturer approved by the following companies in the heavy metal skeleton structures sector
Mapna combinative cycle power plant development and construction (developmnet 1,2,3)
Mapna equipment and boiler construction and engineering Co
OIEC (oil industries construction and engineering co )
Petrochemical industries national company
Civil and industrial plans execution and engineering company (TAM)
SEECO
Iran khodro Co
Saipa & Citroen Company
Barkat Foundation Company
MEMSECO Co
Sazeh Co
Farab Co
A.S.P Co
Saba Oil co
Iran melli bank
Tejarat Bank
Refah Bank
Mellat Bank
Pasargad Bank
Melal Bank
Karafarin Bank
