本遮阳板可挂于窗户上,既防阳光直射入室,又不影响通风和采光,造型美观,叶片角度可任意调节,夜间可将叶片角度下垂当窗帘使用。该产品应用了计算机和系统工程学最新科研成果,选用最佳参数,比国外的百叶窗帘先进,在通风与采光方面比国外百叶窗好 The sun visor can be hung on the window, both against direct sunlight into the room, without affecting the ventilation and lighting, handsome in appearance, the blade angle can be adjusted at night, the blade angle can be used when hanging down. The product uses computer and system engineering, the latest scientific research, the selection of the best parameters than the advanced foreign blinds, louvres in the ventilation and lighting better than foreign blinds