... . 3.Rigid PCB bare board. pcb RODUCTION CAPABILITYSolder Mask Types: Green, White, Blue, Red, Matt Green, Matt Black etc.Surface ... Finishing: Lead Free Hot Air Leveling (HASL), HAL;Immersion Gold (ENLG), Immersion Silver, Immersion Tin;Electronic ... 12LayersMaterialFR-4, AL PCB, CEM-1, Taconic, RogersFinish Board Thickness0.2mm-3.2mm(8mil-126mil)Copper Thickness1/2 ...