... endurable EVA,a sheet of mono-Crystalline cells with effieciency and a sheet of TPT,which ... weather and prevent moisture from penetration into the module.3) Heavy quality anodized aluminum frame provides ... electrical performance of every module are tested to guarantee high quality.6) 220W Solar cell modules ,black panels ... under 20% decrease within 25 years solar module (TUV,IEC,UL,CE,ISO),black panel