फैक्ट्री की छतों पर ये क्यों होता है? | why does wind ventilator place on roof of factory? | Most Amazing facts | Fact Edition Episode.<br /><br /> In this video, facts(rochak tathya/ रोचक तथ्य) you don't know Or facts you never knew. <br />Today you will see this facts video in Hindi And together "फैक्ट्री की छतों पर ये क्यों होता है? | why does wind ventilator place on roof of factory?"<br /> And Top Engimatic Fact & 20 Most Amazing Facts.<br />see this video And this video is gonna be very interesting so watch the video till the end And I hope you liked the Facts Edition.<br />#topengimaticfacts #amazingfacts #facts #factsinhindi #shorts #fact #gk #world #roof #ventilator *<br />
