1.Opening door speed: 0.8-1.2m/sec, adjustable 2.Door orbit material: Steel baking paint or Stainless stell 3.Door curtain material: PVC foundation ,Non-Flammable, dustproof, Anti-ultraviolet 4.Door lock : interlock for two doors , Microcomputer control 5. anti wind capacity： with aluminum alloy wind-resistant bar 6.Sealing performance: to the bottom of the door curtain with the increased gas cloth, it can keep tight with all kinds of level ground, the sealing brush are installed at both sides of the door frame (insect-resistant, dustproof, sound insulation). ● Custom design at any specifications and fabrication available per customer request.