1. The door panel and frame are made of high-strength galvanized sheet with surface sprayingtreatment, which has strong corrosion resistance
2. Wear resistant and anti-aging sealant strips shall be selected at the left, right and top of thedoor panel
3. The bottom of the door panel adopts an automatic lifting sealing device to ensure overallairtightness
4. Choose high-quality hardware accessories that are aesthetically pleasing, durable, andlong-lasting








