Efficient Automatic Lifting/Lowering Steel Fireproof Roller Shutter for Building Security Isolation

Efficient Automatic Lifting/Lowering Steel Fireproof Roller Shutter for Building Security Isolation. Fireproof & Explosion-Proof: Explosion-proof grade under 4 hours, suitable for fire protection zones. Wind-Resistant Design: Typhoon-resistant, prying-proof, rain-proof, and sand-proof for coastal areas. Customizable Specifications: Tailor-made for special dimensions, fire requirements, and usage environments. Dual Open Method: Supports both electric and manual operation for flexible control. High-Strength Material: Made of galvanized, aluminum zinc plated, or stainless steel with fireproof core. Noise Insulation: Provides 45dB sound insulation for quiet environments. Comprehensive Warranty: 1-year warranty covering free maintenance and spare parts replacement. ISO9001 Certified: Certified by ISO9001:2015 with 41 qualification certificates.