We are professional supplier from China, with specialized experience in aluminum industry for many years. Aluminium Extrusion Heatsink, What Is Billet, Heating Aluminium, Aluminum Dies,Silicon Metal. Extrusion process: The Billets are to be heated and cut to short before entering the extrusion press machine Extrusion ram push the short aluminum billet into container and through the extrusion die. Then aluminum profile comes out, and pulled by the puller tractor, conveyed on cooling table,heated by aging furnace. Finally through surface treatment such as powder coating or anodizing, the aluminum profile product is finished. The product will supply to all over the world, such as Europe, America, Australia,Swiss, Angola,New York, Poland.Foshan Zhelu has successfully developed 6 series aluminum alloy profile products with high strength and high corrosion resistance, which can be used in ships and other fields.