이 부품 일본인이 발명?
<iframe width="1349" height="759" src="https://www.youtube.com/embed/vNGePPeWk88" title="" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

