The main items include fixed and movable blades, sealing rings and glands and segments, segment stators, bearings, washers, lock washers, lock plates, gaskets, Nordlock, shims, orifices, spring washers, etc. Out of this number, about 250 items are used in the most frequently used repair courses and other items are used on a case-by-case basis according to the needs of the site in question. Out of the total consumable items in turbine repair courses (about 800 items), every year for about 15 repair levels C and 5 repair levels B, C, spare parts are ordered by the company's orders unit, which has a turnover between 350 and 500 billion tomans. It creates finance for the company. At present, more than 30 spare parts supply contractor companies are operating and cooperating for the manufacture and supply of various items and consumable parts under the brand of Davvar moharek company, of which about 20% are foreign suppliers, in parallel, while sourcing And the quantitative and qualitative rating of new contractors and suppliers, the company's family of spare parts suppliers is always being monitored and developed, the close relationship of Ghadir Yazd companies, Middle Eastern industrial gas turbines, Pars Precision Casting, Satek, etc. within the group Oil turbo compressor, in addition to the speed of operation in supplying the orders of employers, guarantees the quality of the products of the Dewar Dinim brand.