1.PCB Double Side 2.Red resist, Immersion Gold finished 3.Competitive price and high quality PCB Fetures:1) Layers: 22) Base material: FR-43) Board thickness: 0.2-3.2mm4) Min.finished hole size: 0.2mm5) Min track width,spacing: 4x4mil6) Outline: routing, punching, V-cut, chamfered7) Surface finish: Immersion Gold8) Copper thickness: 0.5oz, 1oz, 2ozRed Solder MaskImmersion Gold Finished