1.immersion gold al pcb base board 2.with routing ... and stamp hole 3.Fast delivery,competitive price 4.ROHS, UL, ISO9001-2000 1 ... . immersion gold al pcb base board with routing and stamp hole2 ... baseSurface Treatment: HASL,HASL lead-free,HAL,Flash gold,immersion gold,OSP,immersion silver,immersion tin,peelable mask Board ...