While in the short term it is difficult to break the monopoly of the supply of ores, Hefei beam, but the strategy of going out has been implemented. At present, China imported iron ore source countries has grown to more than 40 countries; In addition to Australia, Brazil and other countries, traditional resources, overseas resource investment in China is still in South Africa, Mongolia, Vietnam, Kazakhstan, Cambodia, Peru, Argentina and other countries of aspects of the current Progress has been made. In 2009, Chinese acquisitions in the mining and metals industry amounted to a $ 16.1 billion, q235 beam, accounting for 27 per cent of global trade. 58% of the acquisition occurred in Australia and Canada. First quarter of 2010 China's total overseas M $ 11.6 billion, and in 2009 an increase of 863%, creating the highest record quarter. Which, since 2010, q345c beam, China conducted a total amount of 5 pen more than one billion US dollars in deals. US Steel Union law: it is a variant of Sendzimir law, it is only the use of an alkaline electrolyte degreasing tank replaces the skimmed oxidation furnace, basically the same as the rest of the process and Sendzimir. After the original plate into the operating line, 120 I-beam, first electrolytic degreasing, then washed, dried, and then through the protective gas reduction furnace recrystallization annealing, and finally into the hot dip galvanized zinc pot in a sealed case. This method is not oxidized because of the strip heating furnace, so the surface of the thin oxide film, the reduction furnace can be appropriately reduced hydrogen content in the protective gas. Thus, for furnace favorable safety and reduce production costs. However, due to the lack of pre-heating the strip to enter the reduction furnace, so no doubt improve the heat load reduction furnace, affect the life of the furnace. Therefore, this method does not have a wide range of applications. 25 # I-beam, exhibition of Commerce Bo (certification), Hefei beam provided by the Hefei exhibition Bo Trading Company. Hefei Show Bo Trading Company (www.hfzhanbo.com) (www.hfzhanbo.com) is Hefei, steel leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. In the exhibition of Commerce Bo leadership with the staff warmly welcome all inquiries negotiations to create the exhibition of Commerce Bo better future.