... are including Al base, Iron base, Brass base, steel base, Ceramic and Teflon Board. Typical Feature . 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 . ...