MCPCB is a metal-based copper clad laminate with the ability to dissipate heat rapidly. Generally, the single layer is composed of a three-layer structure, which is a circuit layer (copper foil), an insulating layer and a metal base layer. It can also be designed as a double-layer for high-end use. The structure is a circuit layer, an insulation layer, an aluminum base, an insulation layer and a circuit layer, respectively. A very small number of applications are multi-layer boards, which can be made of ordinary multi-layer boards combined with an insulating layer and an aluminum base. The LED aluminum substrate is PCB but the material of the circuit board is aluminum alloy. In the past, the material of our general circuit board was glass fiber, but because the LED generates high heat, the circuit board for LED lamps is generally aluminum substrate. It can conduct heat quickly. While the circuit board for other equipment or electrical appliances is still a fiberglass board.