Product Description: Multi-layer Circuit Board Board is one of the most important components for electronic products. It is composed of FR-4, TG150-170/ Aluminum/ Flexible materials and has a minimum line width of 3mil. The board thickness of the Multi-layer PCB Board is between 0.2-3.2mm and the surface finish can be HASL/ENIG/OSP/Immersion Silver/Gold Finger. The silk screen color of the Multi-layer Circuit Board Board is available in White/Black/Yellow. Multi-layer Circuit