... 4.Chip size: 125*125, 156*156 1. Main products: Solar module, Solar panel, Photovoltaic power syetem, etc..2. Qualified certification: TUV ... .0mm(round chamfers)Thickness: Wafer(Si):200μm±20μm Cell: 240μm±40μmFront: 1.5mm Silver bus bars; Blue ... ,000W/m2,AM1.5,25oC.*All figures bear±3% of tolerance.*The measurement of cell is calibrated by Fraunhofer ISE. solar panel Mono& Polycrystalline