MMAs or (Methyl Methacrylates) offer rapid application and shorter curing times. Some systems are forklift ready in 45 minutes. MMAs are flexible and UV resistant making it perfect for outdoor use. MMAs are chemical resistant, shock resistant and easy to maintain.They are non-carcinogenic, and mutagenic. In fact, MMAs meet all FDA/USDA standards but they do produce a strong odor at first that can penetrate uncovered products.!