... % efficiency Uniform color 125x125mm Mono Silicon Solar Cells with tab wire for DIY Solar Module Electrical Property 1, Solar Cells Structure2, Mechanical ... Sn 62%, Pb 34%, Ag 3%Base Material: oxygen-free copper ( TU1 or CAD-110 or UNS C11000)Length: 250mm or ... , we also provide other raw material for solar panel, like pv ribbon wire (solder tabbing wire, bus wire), flux pens, silicon, junction boxes, ...