... 3w LED PCB with 3 lights: 1. 2.7W aluminum base material 2. 3.0 watt leds 3.anti-yellow ... particular for high-class LED lightening products. 3. Thermal Conductive ---material with above 2.0 (W/m·K), ... -layer board, high density board, including MLB with blind/buried via holesMain base material:FR-1, ... -2, FR-4, CEM-1, CEM-3, High Frequency Laminate with various dielectric constant (imported or from local ...