... including Al base, Iron base, Brass base, steel base, Ceramic and Teflon Board. Typical Feature . Standard dimension: 490 X 490mm 600 X ... ) . Copper foil thickness: 35um, 70um, 105um, 140um, 210um . Heat conduction and insulating layer thickness: 60um Application Motor, auto-bicycle Trigger, voltage ... , Industrial power, Solar-energy batter base, heat sinker ect. Teflon-Board with grey color for control ...