For LED lamps, PCBs with a metal base are used. And we can say that the aluminum base is obviously the best option.
LED lamps emit a lot of heat, which, if not dissipated, reduces the service life of the lighting device and causes degradation of the diode. Diode degradation is a process when LEDs lose their power during operation. It happens much faster unless aluminum PCBs are used.
A printed circuit board made of aluminum dissipates heat and, passing it through itself, transfers it to a larger radiator or a special cooling fan, if provided by the design.
At the same time, in soldering, such a PCB is no different from boards made of other materials. The only difference is that manual soldering will not be possible, since the heat from the soldering iron will instantly dissipate over the surface. It is the property of the material. This is its main feature.
A feature that allows to cool the lamps even with the most powerful diodes. Lamps with such PCB live much longer than those where aluminum is not used.