I supply fast doors, rapid roll doors, fast shutter doors, high speed doors, high speed roll doors, high speed shutter doors, pvc soft doors, industrial doors, shutter doors, Shanghai fast shutter doors, European-style doors, Shanghai rapid roll doors, fire doors, rolling doors , fire shutter doors, Shanghai fast doors, Shanghai high-speed shutter doors, Shanghai high-speed roll doors, Shanghai high-speed doors, PVC anti-static curtain, PVC anti-static film, pvc curtain, pvc transparent curtain, folding pvc curtain, pest PVC curtain PROTECTION pvc plate light, UV pvc film, PVC Anti-arc plate, transparent pvc board; composite steel fire anti-cigarette curtain flaps key is the use of special equipment. Primary flaps and flap-time shop help extrusion, smooth surface, no welding, strength and other characteristics. The middle is filled with non-combustible fire insulation materials, greatly reducing the unexposed surface of the radiant heat, a long refractory time, superior performance, and eliminating the need for water curtain protection system, to meet the various fire district meteorite faulting, vertical lift The composite steel fire shutter with manual and electric lifting device, automatic and linkage control and fire center. Products by GB14102-2005 testing, the refractory time in more than four hours, the expert engineering and technical personnel qualification and full performance testing, that the product performance and quality have reached and exceeded the level of similar products at home and abroad. Product sales throughout the country. Technical Performance: Fire performance: According to national standard GB14102-2005 "steel fire shutter General technical conditions", F4 class fire endurance rating ≥3.0h,> 4.0h. National fixed fire extinguishing systems and fire Component Quality Supervision and Inspection Center ≥3.0h,> 4.0h. 1, the smoke performance: smoke type shutter smoke leakage of not more than 0.2m3 / m2min. 2, wind pressure strength: wind pressure resistance of various types of rolling average 80Pa / m2.