▁fact ories , ▁oil ▁ref in ery , ▁pet ro chem ical ▁complex , ▁food ▁processing , ▁c ement , ▁text iles , ▁electric ▁equipment , ▁and ▁sugar ▁mill ing . ▁O il ▁and ▁gas ▁pip elines ▁run ▁through ▁the ▁region . ▁W ool , ▁car p ets , ▁and ▁metal ▁w are ▁are ▁also ▁produced . ▁In ▁some ▁fact ories ▁and ▁major ▁companies ▁in ▁A zer ba ij an ▁include : ▁ ▁Iran ▁T ractor ▁Man ufact uring ▁Company ▁( IT M CO ): ▁is ▁a ▁producer ▁of ▁tra ctor , ▁dies el ▁engines , ▁and ▁other ▁auto ▁arts ▁and ▁provider ▁of ▁industrial ▁services ▁with ▁its ▁head qu arter ▁and ▁main ▁site ▁in ▁Tab riz . ▁IT M CO ▁has ▁manufact uring ▁sites ▁in ▁several ▁countries ▁and ▁it ▁exports ▁different ▁products ▁to ▁ten ▁countries . ▁The ▁company ▁is ▁an ▁ISO ▁ 9 0 0 1 ▁aud ited , ▁and ▁has ▁also ▁received ▁several ▁re wards ▁of ▁quality ▁and ▁export ing . ▁IT M CO ▁is ▁listed ▁as ▁one ▁of ▁Iran ' s ▁ 1 0 0 ▁fortune ▁br ands . ▁ ▁Gold stone ▁T ires : ▁operating ▁under ▁the ▁brand ▁Gold stone ▁T ires ▁is ▁an ▁Iran ian ▁t ire ▁manufact urer ▁for ▁autom ob iles , ▁commercial ▁tr uck s , ▁light ▁tr uck s , ▁SU V s , ▁race ▁cars , ▁air plan es , ▁and ▁heavy ▁earth - m over ▁mach in ery ▁in ▁Ar d abil . ▁Ar ta w heel ▁T ire ▁is ▁currently ▁the ▁largest