association. iran said that despite the many capacities in the stone industry, including the capacity of 400 million square meters for processing units , the export of this industry is less than 200 million dollars per year, which is construction stones, mining, machinery and related equipment, adding that iran's share of the 30 billion dollar market of this industry is only it is half a percent banana mining units and we have to fix it, we have to install the welfare machines there, we have to update the processing machines , the trainings should be seen in the middle, and this is 50% of the 50% of the issue according to the approach of the government men. luxury goods are not strategic goods. now there is someone . we must have incentives for the subject, whether it is semi-processed or processed, so that we can reach the final number of five billion dollars in the coming years of the program and reach the 13th exhibition of stones. construction of mining machinery and tehran's affiliated equipment started working in tehran's aftab international exhibition on june 8 and will continue until tomorro