... . Standard dimension: 490 X 490mm 600 X 500mm (optional dimension for discussion) . Standard thickness: 1. 0, 1. 5, 2. 0, 3 ... . 0 mm(optional dimension for discussion) . Copper foil thickness: 35um, 70um, 105um, 140um, 210um . ... -bicycle Trigger, voltage adjustor Audio Output magnifier, Power supply, Solid transistor base, Industrial power, Solar-energy batter base, heat sinker ect ...