12 layers of fpc soft board: 12L
Structure: 4R 4F 4R
Plate thickness: 1.8mm
Outer copper thickness: 1 OZ
Inner copper thickness: 1 OZ
Minimum hole diameter: 0.3mm
Minimum line width/line spacing: 4mil
Surface treatment: gold deposit
Product application: intelligent robot
Process difficulty: high multilayer soft and hard combination board