Product name: computer card board

Number of layers: 4L

Plate thickness: 1.6mm

Plate: FR-4

Copper thickness: 1oz inside and outside

Line width and line spacing: 4mil

Minimum hole diameter: 0.2mm

Impedance requirement: 50/100 Ω

Surface treatment: OSP

Main features: BGA, impedance control, 4mil line width and line spacing