Hellow guys, Welcome to my website, and you are watching 화이트 칼라, 블루 칼라 등의 계급층 이름의 뜻은?. and this vIdeo is uploaded by 질문들 [궁금증 해결 상식 지식인 이야기] at 2021-03-20T02:24:12-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.