SungPoong Solled Co.,Ltd.
WONWOO Engineering Co., Ltd.
DONGMYUNG LIGHTING CO., LTD.
KUM KYEONG Lighting Co.,Ltd.
SAMHEE INSTRUMENT CO.,LTD
Mutual Growth Industry Association
KC Environmental Design Co., Ltd.
Cheorwon Plasma Research Institute
semiwell electronics co.,ltd
Seoul Semiconductor Co., Ltd.