- By Subway / Bus
1. Taking off at Ganseok station in subway no 1 line and it takes 15 minutes by walk to the direction of Byuk-San plaza.
2. Ride a bus of the number of 103,7 to Byuk-San plaza bus stop in Dongam station(subway line number1) and take off Sipjeong Street. Head office of HKOpto takes 5 minutes by walk.

- By Car from Seoul
Take out of Gaja IC in the Gyeongin highway, Go to the right over Ganseok street direct,
And going straight after turning to the right in Parking of Kyungin Center Building on right side
When it comes out in exit, HKOPTO head office is located in (second floor building of red brick) right side.

- By Car from PanKyo
When using the highway, that is Seoul-Belted Road, you should go to the direction of Ilsan direction and then you should take out of Seoul-Belted Road then you have to change the Kyungin highway and take out Gaja IC.