all over the world, the head of the iran stone association says that our country has the capacity to export 5 billion dollars of building stone, but its share in the world stone market is now less than 200 million dollars . construction stones rank first in the world and our mineral reserves are 4 billion tomans, which means that we are one of the richest countries in the world in terms of decorative stone reserves in the world . stone mines are the same diversity in the eyes of traders i came here for the first time. i was expecting you. i found it very interesting. it was beyond my expectations. i saw a lot of capabilities . there are about 4,000 stone units in the country, but they keep saying that we need to update and import a new generation of modern processing knowledge, compared to what we have. it comes out of the body in the form of blocks. what is the reason? the main reason is the lack of machines, machines and advanced technology. achieving this vision requires the support of the authorities. processing requires width all of them can be bought, but the ministry of silenc