The process of making an amazing spiral duct. Various duct manufacturing factory in South Korea

🔎 Information 🔔 Duct in the video : DS Industry () 🗺️ Address : 202, Juseok-ro, Namyang-eup, Hwaseong-si, Gyeonggi-do, Republic of Korea 📧 Video shooting inquiry : megaprocess7777@ I would like to express my gratitude to the CEO for helping with the production of the video, and I would also like to express my deep gratitude to the enthusiasm of the engineers. 🎥 Copyright(C) 2021. Mega Process. all rights reserved.