... for beads 4.Aluminum steel framework 5.28mm and 38mm Office Sun-shading Bead Roller Blind Featuresused the aluminum steel ... high strength and corrosion resistant, used the PVC plug-in unit, no need sewing, easy for installation.Low friction factor between ... hotel, villa, meeting room, coffee bar, office building.Pictures of the Office Sun-shading Bead Roller Blind Office Sun-shading Bead Roller Blind