metal core board: 1. 2.0W aluminum base material 2.anti-yellow ... constant (imported or from local supplier), Aluminum base laminate, Metal core AluminumSurface Finish:Hot air Lev p lead free HASL, immersion ... gold/silver/tin, plating gold, OSPBoard Thickness:Inner core thickness 0.15-1.5mm, finished board thickness 0.20 ...