1.PV solar panel, mono & poly 2.TUV, IEC, CE,UL,ISO certified 3.Solar panel will attend HK Lighting Fair in October. 275W Mono Solar Panel 72 Solar Cells Home ... (%):14.0%Cell Efficiency(%):16.0%Tolerance:±3%Electrical Characteristics:Solar Cell:Monocrystalline156mm*156mmConfiguration:72cells,6*12seriedDimension:1955*990*46mmWeight:23KGSJunction ...