220W pv modules,have TUV,IEC,CE,UL,MCS,ISO have good warranty and reliable ... transparency,endurable EVA,a sheet of mono-Crystalline cells with effieciency and a sheet of TPT,which has proven ... are tested to guarantee high quality.6) 220W Solar cell modules ,black panels' size can be changed according to customer' ... years and under 20% decrease within 25 years solar module (TUV,IEC,UL,CE,ISO),black panel