good quality 8L HDI board good quality PCB supplier raypcb from China good quality 8L HDI boardgood quality PCB supplier raypcb from ChinaLayer: 8Material: FR4Tg: 170°CBoard thickness: 2.0mmSurface finished: Immersion goldMin through hole: 0.2mm(8mil)Min line width: 4MilMin line space: 4MilVIPPO: NoSolder mask: greenSilkscreen: whiteSingle size: 150x120mmCertificate: UL, ROHS, T/S16949ISO9001: ...