*.Property: excellent air-tightness, dust proof, high stability, easy to clean. *. Application scope: widely used for the area-isolation of pharmaceuticals, food, electronic, cigarette, printing and textile industry, cleaning room, supermarket , car distribution sites, hangar, cold underground parking and other light industrial workshop, etc *.Speed of opening and closing: opening speed:1.5m/s(adjustable), 1500~2000 times/day *.Curtain features: high intensity polyester fiber, with double sided pvc coating, curtain contains horizontal aluminum ribs to withstand strong wind. An aluminum rib and a rubber seal are placed at the bottom edge of curtain. Pvc perspective windows can be set according to users demand. *.Size and color: according to the size of door openings and installation of occasions, size can be customized and the color includes orange ?yellow?white?red?blue?grey?clear, etc. *.Driven system: high speed door special motor or sew motor(germany brand), bkj, sej. Etc. *.Opening ways:manual button, radar sensor, remote controller, rope, earth inductor