For led lighting board, it is most used with led, connector, wire, thermal pad to assemble on MCPCB board(some low power led could use on FR4 PCB or CEM-3 pcb), which is the core on whole led lighting module.
At SUNNY PCB, in the beginning we use some of consigned led from some top brand led vendors and some others components (connector, wire, thermal pad consigned or partially consigned because we provided some MCPCB assembly board for their RD.
Till now, SUNNY PCB have many channel to source above components with best cost based good business relationship in years cooperation.