▁Source : ▁ ▁The ▁original ▁six - car ▁sets ▁were ▁later ▁length ened ▁to ▁eight ▁cars ▁with ▁the ▁addition ▁of ▁pairs ▁of ▁ 3 rd - batch ▁( 1 4 ▁vehicles ▁built ▁in ▁ 1 9 8 6 ▁by ▁Hit achi ) ▁and ▁ 5 th - batch ▁( 2 2 ▁vehicles ▁built ▁between ▁ 1 9 8 8 ▁and ▁ 1 9 8 9 ▁by ▁K aw as aki ▁He avy ▁Indust ries ) ▁cars . ▁ ▁References ▁ ▁Category : E lect ric ▁multiple ▁units ▁of ▁Japan ▁Category : To ei ▁Sub way ▁Category : H it achi ▁multiple ▁units ▁Category : K aw as aki ▁multiple ▁units ▁Category : K ink i ▁Sh ary o ▁rolling ▁stock ▁Category : Tra in - related ▁introdu ctions ▁in ▁ 1 9 7 8 <0x0A> </s> ▁Th ess aly ▁or ▁Th ess alia ▁( Att ic ▁Greek : ▁, ▁Th ess al ía ▁or ▁, ▁Th ett al ía ) ▁was ▁one ▁of ▁the ▁traditional ▁regions ▁of ▁An cient ▁Greece . ▁During ▁the ▁My c ena e an ▁period , ▁Th ess aly ▁was ▁known ▁as ▁A e olia , ▁a ▁name ▁that ▁continued ▁to ▁be ▁used ▁for ▁one ▁of ▁the ▁major ▁tribes ▁of ▁Greece , ▁the ▁A e oli ans , ▁and ▁their ▁dialect ▁of ▁Greek , ▁A e ol ic . ▁ ▁Geography ▁ ▁At ▁its ▁greatest ▁extent , ▁ancient ▁Th ess aly ▁was ▁a ▁wide ▁area ▁stretch ing ▁from ▁Mount ▁Olymp us ▁to ▁the ▁north ▁to ▁the ▁S per che