Phenolic PCB Board is also known in the copper clad sheet. This is a good quality copper clad sheet for DIY circuits or any type of circuits. This PCB is single side laminated sheet and provides more strength and flexibility.
It is easy to make the circuit in the Copper clad sheet as it requires less soldering and connecting wires, but need some technique to build a circuit on this. RoboElements has good quality general purpose PCB sheet to make any circuits.