Aluminum Alloy Overhead Rolling Industrial Upgrading Door The industrial upgrading garage door,composed of a series of door pane, lift along the tracks. With stylish appearance design, simple and smooth line design, it gives us a pleasant feeling. The stable and spectacular operation of larger industrial products can give people a strong visual impact. It has a torsion spring system and weight system to protect the balance of the door, different situation can choose different ways to enhance, and a variety of colors. An array of door panel profiles, track and hardware, and specialized options allows you to further customize these doors to your specific project requirements. Top-quality materials, excellent field service and optional maintenance program contribute to extended door life, low maintenance costs and maximum productivity. Main Features: Automatic,security,heat preservation,torsion spring…