Sturdy and Durable Steel Fireproof Rolling Shutter Door for Building Security Isolation

Sturdy and Durable Steel Fireproof Rolling Shutter Door for Building Security Isolation. Fireproof & Explosion-Proof: Explosion-proof grade <4 hours, suitable for fire protection zones. Wind & Weather Resistant: Typhoon-resistant, rain-proof, moisture-proof, sand-proof, and noise-isolating. Customizable Open Method: Supports both electric and manual open methods for flexible operation. Durable Steel Material: Made of high-strength galvanized, aluminum zinc plated, or stainless steel. Anti-Corrosion Design: Prevents air receding and dust penetration to reduce corrosion risks. Sloping Floor Solution: Solves door bottom issues on sloping floors with strong convex bar design. ISO9001 Certified: Certified by ISO9001:2015 with 41 qualification certificates. Full Customization: Offers full customization from samples, designs, and minor adjustments.