... copper, board T1.6mm2.Transparent solder mask,HASL lead-free3.Fast delivery time,with competitive pricing4 ... Rogers,Arlon,Taconic,Isola,PTFE, BergquistSurface Treatment: HASL,HASL lead-free,HAL,Flash gold,immersion gold, ... HASL lead free Lead time:5 working daysPrototype for standard process specificationFast Prototype:with 24 hours delivery for double side ... soonest FR4 white material double-side PCB