Door truss structure by optimizing the design, structural mechanics and structural load dead load of the whole process (standard value) + live load node, displacement, envelope and steel reinforcement stress, bending moment envelope, axial force and shear envelope envelope and so precise calculation, each node until the precise calculations and computer software used in all calculations. Application of a number of patented technology;
Use domestic brands of lifting mechanism to ensure that the door to high-quality; Use of five protective facilities to ensure a fail-safe door;
High-strength PVC fabric, durable, beautiful appearance; Gale wind strength 68-75Kg/m2.