... affairs,minitype cinema,casiso place and other enterinment sites. " Available Screen Parameter: Glass Beaded:flame retardant,Mildew resistant,Viewing angle is ... 35°and Gain is 2.8. Matte White:Screen surface can be cleaned,flame retardant,Mildew resistant,Viewing angle ... is 55°and Gain is 1.2. HD gray:Screen surface can be cleaned,flame retardant,Mildew resistant,Viewing angle ...