Hellow guys, Welcome to my website, and you are watching [현장 적용 꿀팁] Gate Valve 또는 Ball Valve 배관에 설치한다면 당신의 선택은?. and this vIdeo is uploaded by 인사고과 'A' 엔지니어 at 2022-07-27T07:32:10-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
