Place of origin taiwan/china Material polycrystalline&monocrystalline silicon Size 125mm x 125mm(mono) & 156mm x 156mm (multi&mono) Dimensions :156mm x 156mm !o 0.5mm. Thickness (si):180;ggm !o 20;ggm / 200;ggm !o 20& Front :silver bus bars silicon nitride anti-reflection coating. Back :silver bus bars full-surface aluminum bsf. 100/pcs for a box, 10 boxes for a carton