... size 4mm², 900mm length, TUV certificatedEncapsulation: low iron tempered glass, 3.2mm thickness, light transmission above 91%, TPT and fast cure ... : 1,000W/m², cell temperature 25°, AM=1.5Power tolerance: ±3%, ,Voc/Isc/Vmp/Imp tolerance:±10%,passed IEC61215, IEC61730 performance ... yearsCertificates:TUV, IEC, CE,CQC and SGS 250w ploy photovoltaic solar panel with solar cells/CE,IEC,TUV cetificates