specialists of fanavar company in yazd succeeded in producing antibacterial threads using zinc nanoparticles. the use of antibacterial compounds in the production or finishing stage of textiles is one of the most efficient methods for the production of antibacterial products consists of mire, we added modifi nano particles and polyester chips in the form of a mixture, and inside that thread, we added nadine thread , and increased the longevity of it, and sometimes it can even be washed up to 20 times. the size of the particles is between 30 and 70 nanometers, and they have the approval of the food and drug organization, and compared to the other nanoparticles that are used before , they have less toxicity and higher potency. 90,000 tons of yarn are produced in this company every year . they keep their properties for a long time a significant amount of this production of antiboxed yarns is exported to different countries. countries from the tribe of turkey, iraq, syria, poland, greece, macedonia and majalistan. these threads, which are known as antibacterial polyester filament threads, have m