4 Layers PCB Product Highlights锛?br/> LF HASL 4 layers PCB manufacturing Board material: FR-4,TG170 Thickness: 2.0mm+/-10% Finished copper thickness 1OZ Reliable quality with competitive price and fast delivery time. Product parameter锛?/strong> Board material FR-4,TG170 thickness 2.0mm+/-10% Finished Copper thickness 1OZ Layer 4 layers Finish LF HASL Solder mask color Green Legend color...