FR-4 material ,immersed gold surface treatment,board thickness 1.6mm competitive price ,high quality , quick delivery ,5 experi multilayer printed circuit board *Base material: FR-4 *Copper thickness: 0.5-2.0 oz*Thickness: 0.2-3.0mm*Solder mask: green, black, red ,yellow, white*Min. line width: 0.2mm*Min. line space: 0.2mm *Min. hole diameter: 0.25mm *Max board size : 600 x 1200mm *Surface ...