The projects came on line in western Zanjan province in a virtual ceremony attended by President Hassan Rouhani.
The projects include a steel complex, phase two of a factory producing industrial wires, an iron ore concentrates factory, a textile facility and a factory turning out different types of plastic containers.
The projects have come with a price tag of Rls. 70 trillion combined.
When the facilities become fully operational, they will create more than 1,700 jobs.