Key Specifications/Special Features:
- Super strong: made by filling the space between the special rustproof steel plates
- Rust-resistant: all tracks and hardware parts are specially treated and coated to become super strong and rustproof
- Heat preservation: advanced sealing design is used to prevent wind, sand and rain from getting in
- Ultra-low noise: the newest noise-reducing technology is adopted to make the door operate in an ultra-quiet state
- Ultra deluxe, unique appearance