4L rigid-flex board

Layers  :  4L
Stack-up :1R+2F+1R
Thickness :  0.55mm
Out Layer Copper Thickness:  1 OZ
Inner Layer Copper Thickness:H OZ
Min hole size :0.2mm
Min Line Width/Space : 3mil
Surface finish:ENIG
Application :Leica camera/ Industrial camera
Features : High quality of impedance matching