... the glass (2400-2800g/cm3) half (2) Chemical resistance: PMMA board has excellent corrosion resistance,in addition to chloroform,acetone and ... s ability compared to simple glass high 7~18 times, through stretch processing PMMA, may serve as the bulletproof glass, also ... as on military airplane's cockpit cover(7) Weatherability: PMMA board has excellent weather resistance,can be used for outdoor products ...