▁- ▁Start ed ▁production ▁of ▁the ▁Ir ra x ▁T ube ▁electron ▁beam ▁ir rad iation ▁tub es ; ▁The ▁head ▁office ▁was ▁moved ▁from ▁Os aka ' s ▁Kon oh ana ▁Ward ▁to ▁its ▁present ▁location ▁in ▁Ch uo ▁Ward ▁▁ 1 9 6 3 ▁- ▁Start ed ▁production ▁of ▁disc ▁bra kes ▁▁ 1 9 6 4 ▁- ▁Start ed ▁production ▁of ▁electron ▁beam ▁ir rad iation ▁w ires ▁▁ 1 9 6 8 ▁- ▁Enter ed ▁into ▁the ▁traffic ▁control ▁systems ▁business ▁▁ 1 9 6 9 ▁- ▁Est ab lished ▁the ▁first ▁over se as ▁production ▁subs idi ary ▁in ▁Th ailand 　 ( SI AM ▁Electric ▁Indust ries ▁Co ., ▁Ltd . ); ▁Start ed ▁development ▁of ▁flexible ▁printed ▁circ uits ▁( F PC s ) ▁▁ 1 9 7 0 ▁- ▁Start ed ▁production ▁of ▁comp ound ▁sem icon duct ors ▁▁▁ 1 9 7 1 ▁- ▁Open ed ▁the ▁K anto ▁Works 1 9 7 4 - Start ed ▁production ▁of ▁optical ▁fi ber ▁c ables ▁▁ 1 9 7 5 ▁- ▁Cont ract ed ▁to ▁construct ▁a ▁power ▁transmission ▁line ▁in ▁Iran ▁▁ 1 9 7 6 ▁- ▁Rece ived ▁an ▁order ▁for ▁a ▁large ▁tele communic ations ▁network ▁construction ▁project ▁in ▁Niger ia ▁▁ 1 9 7 8 ▁- ▁Del iver ed ▁and ▁put ▁into ▁operation ▁the ▁world ' s ▁first ▁bid irection al ▁fi ber ▁opt ics ▁C AT V ▁system ▁called ▁“ Hi - O VIS ” ▁▁ 1 9 8 1