hai nesaji, and in every textile factory , big or small , you will see many irans. right now , they are making quality control in the field of packaging. the knowledge-based company was successful. with the help of these reservoirs , power plants can store excess gas in the hot months of the year and use it in the cold season. thanks to the efforts of danesh banyan corporate researchers in isfahan province of iran , he achieved the knowledge of design and production of double-walled natural gas tanks. this is knowledge it is an advanced technology that was available to some countries, but we were also able to produce anjaya tanks with the standards of this and the national standards of our own country. during the hot seasons of the year, when there is excess consumption , we store it in liquid form in these tanks, and in the cold season of the year , we convert it again into gas through a heat exchanger. let's give it to power plants and factories that need it. one of the uses that is just starting in iran from these doers is to use the gas now to be used for propul