... requirements of CE,ROHS,SGS,and TUV9.Front projection and rear projection are optional10.HD glassfiber Matt White fabric with ... projector.11.5'' -diametre stainless steel roller with 3mm-thickness wall.12,Fabiric is UV Protective,anti- ... retardant13,specialy designed for large size engineerig projection screen. Engineering projection screen/TOP VIEW Motorized Screen/matt white screen surface/pvc fabric