Introduction installed under the ceiling or hidden in the ceiling or floor, fire can prevent smoke and hot gases flowing horizontal vertical dividers. Classification smoke screen can be divided by activity type and turn shutter plate. Effective fall Size smoke screen height should be not less than 500mm. Shutter-style smoke screen of single width should not exceed 6000mm. Smoke screen over plate single cell width should not exceed 2400mm. Use smoke screen is mainly used for high-rise or super high-rise and other large shopping centers, office buildings and warehouses occasions, can effectively block the lateral flow of smoke in the building roof, in order to facilitate increase in smoke effect smoke partition, for the protection of life and property Security has played a positive role. Smoke screen http://www.rqhongan.com