and we produced nearly 3500 road construction and mining machines in the country. the secretary of the association of mining and road construction machinery manufacturers says that the average life of these machines in the country is over 18 years, and their wear and tear has created problems for production. including low productivity, depreciation. high and high cost of repairs, the pollution that it creates for the environment, the high fuel consumption, now the manufacturers say that they can meet the domestic needs with high-quality machines, excavators. we produce loaders , we produce graders, and we produce livestock trucks . the mining machines that exist in iran now, their processing is above 85 to 90%, they can greatly increase the workload by using production machines and replace them very much. mineral products will be suitable for the discussion of oil. the director general of the office of mining machinery and road construction of the ministry of roads, sammit , says that this year's goal is to increase production by 100%, which we predicted in 1402 . and we are looking for that, god willing to supply a large amount of the country's needs from domestic