... . 2.7W aluminum base material 2. 3.0 watt leds 3.anti-yellow white ink 4.free sample ... yellow, in particular for high-class LED lightening products. 3. Thermal Conductive ---material with above 2.0 (W ... 1, FR-2, FR-4, CEM-1, CEM-3, High Frequency Laminate with various dielectric constant (imported or ... , finished board thickness 0.20-3mmCopper Foil Thickness:1/3 OZ–5 OZ (18um – 175um)Min. hole size ...