... electrical properties and good dimensional stability.It is widely used in the data commiunication,avionics,aerospace/defencse,personal computer and autumotive ... . Solid relay 5. High cost performance 6.Widely used in telecommunication,electrical,electronics,marine,aerospace,military,medical,gaming and HVAC ... PI-copper pcb,Double layer Flexible PCB, FPC,Soft PCB in China,polyimide copper flexible pcb