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)


Iran khodro Co

Saipa & Citroen Company

Barkat Foundation Company


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