<iframe width="1070" height="1903" src="https://www.youtube.com/embed/n5qjraEqIuE" title="Seismic Isolation system Lead rubber bearing(LRB) Seismic isolation bearing" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
<iframe width="1070" height="1903" src="https://www.youtube.com/embed/oZxpT-J4eZU" title="대지진에도 버틴 빌딩의 비밀" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>