... two holes. 1. Aluminum power supply pcb for light2. OEM PCB/PCBA3. Custom-made PCB,MCpcb manufacturer4.Single layer,1.6mm ... thicknessHoz~3ozLayer no.Single side,double side,multilayers and aluminum pcb,FPC boardMax panel size32" * 20"min line width/ ... size0.1mmSurface finishingHASL,LF HASL,OSP(Entek),ENIG,Immersion Tin,Immersion Silver,gold fingerCertificateRoHs,UL,ISO,IPC,SGS Power Supply Pcb,MC PCB