Hellow guys, Welcome to my website, and you are watching 특허청 페친들이 뽑은 우리나라를 빛낸 발명품 10선. and this vIdeo is uploaded by 대한민국 특허청 at 2018-12-12T23:00:03-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
