Hellow guys, Welcome to my website, and you are watching 4차산업혁명위원회, 지난 4년간의 4차산업혁명 성과. and this vIdeo is uploaded by 대통령직속 4차산업혁명위원회 at 2021-05-06T17:48:12-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
