... composed with MMA(methy methacrylate, materials mainly used for false teeth), natural minerals, pigmeng and so on ... usage, it will not turn yellow and good for outdoor usage. It is also alkali resistence, ... like paint and solvent.2Dont immerse in liquid for long time.3Dont impact intensely.4Dont put hot ... to avoid spot staying on the surface for a long time.B.Maintenance Method1General dirt: clean with a ...