Monocrystaline Solar panels produced by Himin have certificate of TUV and IEC from 10w-185w, solar panels of higher wattage available according to your requirement Features of high power module: High power module using 125mm square monocrystaline silicon solar cell with 14.1% module conversion efficency. Photovltaic module with bypass diode minimizes the power drope caused by shade.textured cell surface to reduce the reflection of sunlight and BSF(Back Surface Field)structure to improve cell conversion efficency: 16.9%. Using low iron tempered glass,EVA resin and an aluminium frame for extended outdoor use. DC 24V systerm and high voltage output for grid-connected systerm. Output terminal: Lead wire with waterproof connect .