Current marketing main products using two kinds of materials: metal, or plastic. Good thermal conductivity of metals, but now any notebook with anti-slip rubber pads on the bottom, and metal cooling base cannot close together, so cannot fully play thermal conductivity of metals. Of course, the metal base can be better distributed within the notebook out of heat absorption and diffusion. Metals tend to be heavy and high requirements due to the manufacturing process, once enough fine workmanship, vulnerable to assault weapon. Plastic materials tend to be more portable, higher hardness and strength of many engineering plastics than metals. For the consideration of the costs and the light, light weight, fever, small notebook can buy plastic cooling base design better. But if the weight of large fever notebook still suggest purchasing metals with higher material workmanship of good cooling base.