1.Ni/Au Double-sided PCB 2.UL,SGS,ROHS,ISO9001. CEC 3. ... high quality 4.20years in Printed circuit boad 1.Ni/Au Double-sided PCB2.UL,SGS,ROHS,ISO9001. CEC 3.Fast ... "(0.1mm)PlatingHASL2.5umLead free HASL2.5umImmersion GoldNickel 3-7um Au:1-3u''OSP0.2-0.5umOutlinePanel Outline Tol (+/-)±0.004 ...