... , textiles, shopping centre, warehouse, logistics, auto manufacturing etc. It's the best choice for fast open/close and regional isolation ... insulation, sound insulation, dustproof, lighting and high speed(0.7m/s-1.7m/s, adjustable) etc. High Speed in Open and Close: -- ... 0.7m/s to 1.7m/s, efficient in work and energy-saving. Security system: meets the requirements of CE.--Photoelectric sensor;--Safe ...