Printed Circuit Boards LBE can help customers source PCBs from single-sided CEM to multi-layer FR4, and double-sided super-long Capton PCBs as shown below. Capton high-temperature, fully flexible, super-strong, double-sided PCB circuit board used as a level indicator for wine barrels. Go to slide 3 Go to 2 Parker board, double-sided FR4 rigid, plated through vias, used in agricultural tractor implement controller. Go to slide 1 Go to 3 Printed circuit board. Single-sided FR4 semi-flexible PCB circuit board, used for home incarceration device. Go to slide 2 Go to slide 1