... PU surface writing belt, thickness 1mm core:cystosepiment+pvc top grade aluminum alloy frame,ABS cornnerFeature:1. One board ... it also can replace projector screen.2.Dustless writing,self-cleandustless writing,self-clean,convenient and achieve 100% dustless model of ... protect your eyesight,broadens the vision angle,(≥150°)4.Optimal location for writingThe writing board can be raised freely, writers ...