Tunnel Saz Machine company in recent years according to its valuable experience over 15 years of mechanized excavation and working with TBM machines in the field of designing and manufacturing these equipments in order to provide another valuable step in the path of self-sufficiency of this industry and to meet part of the needs. In this regard, the company has started to equip a factory with an area of more than 10 thousand square meters, which allows the construction and assembly of devices to a drill diameter of 14 meters, and by adopting production policy up to 2021 reach to 70% production knowledge of TBM and Micro TBM machines.