Shutter Door

Dual-screen, single-axis motor, a certain distance between the two parallel screens - synchronous movements. Increase by double-screens, double-track, telex system, the dock, hoist, electric control system components, with fire, heat insulation, smoke, wind pressure function. Curtain trapped surface iron and steel wire rope enhance internal screens face rigid and intensity. Electronic Control System receivers Brown, and the temperature may signal the central control room fire control shutter intermodal movements.