Hellow guys, Welcome to my website, and you are watching ACE 에이스정밀연마 범용 원통 외경 단면 단차연마 작업중입니다 연마작업후 작업자의 꼼꼼한 검사후에 연삭유 이물질 칩 제거 청정세척 킵핑을 하고있습니다. and this vIdeo is uploaded by ACE (주)에이스정밀테크윈 at 2021-01-24T21:19:21-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.