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Panneau solaire photovoltaique silicium amorphe
Source google image: https://ae01.alicdn.com/kf/HLB17T4ZaIfrK1Rjy1Xdq6yemFXa7/2W-6V-Flexible-Solar-Cell-Amorphous-Silicon-Foldable-Solar-Panel-DIY-Solar-Charger-For-3-7v.jpg_220x220q90.jpg