A. The led cold forging cob heat sink is made of 1070 pure aluminum with a thermal conductivity of 226m·K, and the blade can be 0.8mm thick to increase the heat radiation surface area of the product. The integrated heat sink with the same volume and shape can be used for the heat dissipation of larger power products, and it is lighter in weight and saves more transportation costs

B. The thermal conductivity of the same integrated die-casting product material is only 96m·K, and the blade should not be too thin to increase the weight of the product. The surface of die-casting products can not be anodized, but can only be painted, which will affect the heat emission 

C. The thermal conductivity coefficient of automotive aluminum profiles is only 136-196m·K, and the heat sink of aluminum profiles is split, and the joint has a great influence on the heat conduction, which is only about 60% of the same type of integrated products.Two cold extruded one-piece heat sinks of the same volume shape and conventional aluminum car heat sinks are used on products with the same power. The one-piece heat sink temperatures are about 5-6 degrees lower, which can greatly extend product life.