- Gong Gan Channel Co., Ltd. HeadOffice
- Tel82-2-701-1188
- Address265-7, Tojeong-ro, Mapo-gu, Seoul, Korea
- Gong Gan Channel Co., Ltd. Factory
- Tel82-32-563-2311
- Address17, Hwanggeum 3-ro, Yangchon-eup, Gimpo-si, Gyeonggi-do, Korea
- Gong Gan Channel Co., Ltd. Plating Factory
- AddressNo. 203, 14, Garam-ro, Seo-gu, Incheon, Republic of Korea