
Nhentrance High Speed Spiral Rolling Shutter Door for Versatile Industrial Applications. High Opening Speed: Up to 2.5m/s with adjustable servo drive for efficient operations. Wind Resistance: Withstands up to 12 winds with patented broken bridge design. Energy Saving: Polyurethane insulation and double side sealing strips isolate temperature loss. Low Failure Rate: Over 1 million trouble-free operations with daily cycles reaching thousands. Smart Control: Supports radar, geomagnetism, remote control, Bluetooth, and APP opening. Safety Features: Equipped with photoelectric sensors, wireless airbags, and optional light curtain. Customizable Design: Adjustable opening speed, size, color, and induction modes available. Global Certifications: Certified with ISO9001, CE, and SGS for international compliance.