... competitive price 4.ROHS, UL, ISO9001-2000 1. immersion gold al pcb base board with routing and stamp ... : HASL,HASL lead-free,HAL,Flash gold,immersion gold,OSP,immersion silver,immersion tin,peelable mask Board Size: 650mm*1000mmBoard ... base material type1060 / 5050 / 5052surface disposalHASL/ OSP/ immersion gold/ immersion tin/ immersion silver layerSingle-side al substrate / double-side al substrate ...