1. FNC Technology Co., Ltd, Yongin-si, Gyeonggi-do, Republic of Korea
2. Department of Energy and Environmental Engineering, Soonchunhyang University, Asan, Chungcheongnam-do, Republic of Korea
3. SOLTI Co., Ltd, Siheung-si, Gyeonggi-do, Republic of Korea
4. Century Co, Gangseo-gu, Seoul, Republic of Korea