Head Office & Yeonsan Factory
- Address : 17 Worldcup daero 164 Beongil, Yeonje-gu, Busan, Korea
- Rep. Tel. : +82-51-866-8111
Ulsan Factory
- Address : 14-8 Gilcheonsanub 3 gil, Sangbuk Myun, Ulju-gun, Ulsan, Korea
- Rep. Tel. : +82-52-916-8111
Jeonggwan Factory
- Address : 99-70 Sandan 7 ro, Jeoggwan-myun, Gijang-gun, Busan, Korea
- Rep. Tel. : +82-51-727-2942~3
Overseas
- Qingdao DECOSWITCH Co., Ltd.
- Address : Dongwangtuan (2km west), Chengyang Town, Chengyang District, Qingdao, China
- Rep. Tel. : +86-532-8774-2141~2
- Qingdao Heeseong Electronic Co., Ltd.
- Address : North street of the Lancun rain station Jimo Qingdao , China
- Rep. Tel. : +86-532-8259-2728