tungsten bar most of the tube with a tungsten coil connection is made using tungsten

At present, China's nonferrous metals trade, the largest trade smelting products , its quality directly affects the quality of subsequent processing of the product. As of 2005 , remelting ingots , copper cathode , lead, zinc , zinc , tin ingots, magnesium, gold bullion , silver bullion , such as product standards average water reached the international advanced level , quality and international level is very kind . Among them, 48 brands of eight kinds of products on the London Metal Exchange is the world's largest non-ferrous metals market , to enter the international market marks the recognition of product quality . China's major copper, aluminum , lead, zinc , tin and other production companies are registered . Because from the production technology, equipment level to greatly improve enterprise management , the quality of non-ferrous metal processing material has significantly improved. National standard processing materials , the industry standard system integrity, the standard level of developed countries are equivalent, but the overall level of physical quality is uneven , with some typical wood processing products quality has reached the international advanced level. For example ,tungsten bar and refrigeration with brass, before basically rely on imports in recent years, not only meet the domestic demand for the rapid development of air conditioning and refrigeration industry , strongly supports the development of household appliances, power generation and other industries , but also exported to Japan and Europe and other countries for China to become the world's largest air conditioner , refrigerator production , tungsten cubic  make a contribution. Aluminum profiles for the construction industry in recent years has been the rapid development of its products quality has reached the international level , not only meet the domestic demand for the rapid development of the construction industry , but also a large number of export . At present, China has become the world's first architectural aluminum production, exports , consumer. Thanks to the development of aluminum profiles market competition mechanism , after nearly a decade of market competition and elimination, product variety and quality has thus reached a new level. In rare metals and powder metallurgy products, our tantalum powder and tantalum wire processing other materials tantalum and niobium , lithium products such as industrial lithium carbonate, tungsten filaments hydroxide monohydrate and tantalum chloride anhydrous crystalline tantalum, lithium metal , with its products quality able to meet and exceed the technical requirements of the standard , endorsed, export volume rising domestic and foreign users .