Non-ferrous and rare metals there a difference? What is it? Non-ferrous metals generally refers to remove iron (sometimes also removing manganese and chrome) for all metals and iron-based alloys away. Non-ferrous metals can be divided into four categories: (1) Heavy metal: general density of 4.5g / cm3 or more, such as copper, lead and zinc; (2) light metal: low density (0.53 ~ 4.5g / cm3), chemically active, such as aluminum, magnesium, etc. (3) precious metals: the earth's crust less difficult to extract higher prices Which expensive rare metal recycling, density, chemical stability, such as gold, silver, platinum and the like; (4) Rare: such as tungsten, molybdenum, germanium, lithium, lanthanum, uranium. Because of rare significance in modern industry where rare metal recycling, and sometimes they are carved out from the non-ferrous metals, the individual becomes a category. And with ferrous metals, nonferrous metals tied into the metal of the three categories. Copper is a chemical element, its chemical symbol is Cu (Latin: Cuprum), its atomic number is 29, is a transition metal. Copper is one of the earliest humans discovered metal, is also the first widely used metal mankind. Copper and some of its alloys have good corrosion resistance, but also because there are shiny, easy to process, so it is used to make money. Copper is also used in the manufacture of weapons, utensils, and cable. In humid air, the surface layer of copper will generate green patina (the main component of basic copper carbonate Cu;. (OH) .; CO;). Rare high-site recycling of rare metals recycling _ _ East in mind renewable resources by the Dongguan Chang Ping Tung Kee renewable resource recycling offer. Dongguan Chang Ping Tung Kee renewable resource recycling (www.dongji8.com) strong, credible, Guangdong Dongguan scrap recycling industry has accumulated a large number of loyal customers. The company better work attitude and constantly improve the innovation will lead the East in mind the concept of renewable resources into the brilliant and you work for a better future!