Product Description: Double-Sided Printed Wiring Card (also known as double-layer printed wiring card or double-layer circuit board) is a high-performance, high-reliability electronic circuit board with two layers of electronic components and conductive pathways connected by vias. It is characterized by two layers of conductive pathways and electronic components, and the minimum hole space, minimum conductive annulus, minimum trace width and minimum slot space are 0.2mm, 0