Printed circuits (PCB) Several types of PCBs exist. For example, we are used to supply: Rigid: From 1 to 32 layers, HDI, blind and buried hole, VOP, etc. SMI: On aluminium and copper base, from 1 to 4 layers, up to 5W/M.k Flexible: From 1 to 10 layers, rigid flex: 4 to 12 layers Special Circuits: HF, Hybrid, Semi-flex +33 (0)4 78 52 60 14 73 rue Mathieu Dussurgey, 69190 Saint Fons, France