1401/8/2 view 205 comment 0 7th Refractory Industry, Production, Equipment & Related Technologies Exhibition Participating in the refractory Industry Exhibition 1401 Khorasan Powder Metallurgy Company would be the host of your esteemed guests in 7th Refractory Industry Exhibition (booth 23) Date: December 20-22,2022 Venue: Olympic hotel-Tehran-Iran