1). 90*90mm/1up, ITEQ FR-4 Tg1702). 10 layer, 1.6mm thick3). 35 μm copper finished4). LPI Green solder mask/ white legend5). Immersion gold (ENIG)6). Differential impedance control 90 ohm/100 ohm +/-10% on track 0.1mm7). Good for high-count layer PCB, Widely used in computer, communication equipment, precise apparatus and instrument, router, and etc