Features:
1) Three control modes: remote control, electric control, manual 
2) Built-in outside back contorted spring balance system 
3) The door plate adopts advanced imported steel, the surface of which is 
    impressed with classic wooden stripe embossment 
4) Foam filled within interbed, which improves effect of temperature 
    retention and sound insulation
5) Thickness of door plate:40-50mm 
6) The infrared secure protection device is available 
7) Motor: 600-1,000N, 0.25kW, 220V, 50Hz 
8) Speed: 140mm/s, noise: <50db 
9) Distance of remote control: 30m. 
10) Lock in emergency for power off