... . Certificate: ROHS, UL, ISO9001-2000, ISO14001Our Manufacturing Capability for PCB BoardMaterial type: aluminium baseSurface Treatment: HASL,HASL lead-free ... gold,immersion gold,OSP,immersion silver,immersion tin,peelable mask Board Size: 650mm*1000mmBoard Layer: 1L-4LBoard thickness: 0. ... for 6L and 8L PCB120-hour for 10L or more layers PCB at the soonest al base for 1-layer printed circuit board