▪ Layer —— 4L  

▪ Material —— HL832NXA

▪ Size —— 40*40 mm

▪ Thickness—— 0.4mm

▪Copper—— 15 um

▪ Min Trace/Space —— 15/15 um

▪ Min hole—— 50um

▪ Finishing —— Soft Gold (NPL Process)