Material: FR4
Number of layers: 2 layers
Process: Immersion Gold
Minimum drilling hole: 0.25mm Minimum line width: 0.1mm
Minimum line space: 0.1mm
Features: hole copper 25um, gold fingers need beveled edges, and black oil bridges need to be retained 【MORE】
Material: FR4
Number of layers: 6 layers
Process: Immersion Gold
Minimum drilling: 0.25mm
Minimum line width: 0.1mm
Minimum line space: 0.1mm
Features: Impedance gold plate, size tolerance +/-0.1mm, USB card slot position tolerance is strict, via hole 【MORE】
Material: FR4
Number of layers: Four layers Process: Immersion gold
Minimum drilling: 0.25mm
Minimum line width: 0.127mm
Minimum line space: 0.127mm
Features: Four-layer impedance board, non-inductive scratching is not accepted, strict appearance requirements 【MORE】
Material: FR4
Number of layers: four layers
Process: Immersion Gold
Minimum drilling: 0.2mm
Minimum line width: 0.1mm Minimum line spacing: 0.1mm
Features: Four-layer impedance board, gold finger, card slot tolerance +/-0.05mm, no inductive scratching is not accepted 【MORE】