HPSM-20W High Efficiency 20W Solar Mono Crystalline PV Module. Bypass diode minimizes the power drop by shade. White tempered glass ,EVA resin, weather proof film and anodized aluminum frame to provide efficient protection from the severestenvironmental conditions.Waterproof.Perfect for grid applications.Quality AssuranceElectrical Insulation test. Outdoor exposure test. Hot-spot endurance test. UV-exposure.Thermal cycling test. Humidity freeze test. Damp heat test. Robustness of terminations test. Wet leakage current test. Mechanical load test. Hail impact test. Bypass diode thermal test
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