... Conductivity:2.0-3.0w/m.kApplication:Widely used in LED lighting industry. Sample making: 3-5 days ... thickness: 0.5 OZ to 3.0 OZCopper thickness in hole: >25.0 um (>1mil) The Max board ... Line Spacing: 4mil (0.1mm)Surface finishing: HASL / HASL lead free, HAL, Chemical tin, Chemical Gold, Immersion Silver/Gold, ... is our pleasure. China High Quality pcb lead free, OSP, HASL, ENIG multilayersPCB from China ...