... signs, general guiding and marking signs2) Be available for Acrylic type or PVC type film.3) It features high luminance, long lasting ... A-,A,B,C and D,and the quality D is our top quality for this item, with very long afterglow luminance ... , we can supply the finished signboard, and the base can be PVC based,Aluminum, etc. glow green light photo-luminescent film in the darkness