... aluminium frame and junction box. with reasonable price. 4.5W Solar Battery, 9V, polycrystalline encapsulated with glass, with aluminium frame and junction ... -6W, to be sealed with epoxy resin on PCB (printed circuit board), or to be sealed in plastic directly.(B). Wmp ... .01W-15W, to be encapsulated with PET, on PCB (printed circuit board)(C). Wmp range: 1W-60W, to be encapsulated with ...