tafzali also said that all expenses and executive measures related to the construction and operationwater and sewage facilities for long-term periods are left to private sector investors. in the first five months of this year, about 250,000 tons of goods worth 81,528,000 dollars were exported from the border customs of do garoun to afghanistan . the increase in the volume of transit exports of goods from the international customs of dukan taybad , we loaded cement from bazarche dukanun, we are going to harad. abadan bargir landfill to herat, 80% of the goods exported from this land border to hara become the second economic market of afghanistan , which is the most important export goods from this international crossing since the beginning of the year . until now , the amount of export in do gharon customs itself has been more than 246 thousand tons, which shows an increase of 64 thousand tons compared to the same period last year. the high quality of iranian products in the afghan market has led to the prosperity of the islamic republic of iran's exports alone the wealth of the east