The most important elements of Guangzhou’s economy are light manufacturing sector and foreign trade. They are the main reasons for Guangzhou’s economic achievement and its attraction to appeal people from all over the world to begin their own business in this city. Every year, the China Import and Export Commodities Fair (Guangzhou Fair) is held here. It has the biggest conference and exhibition center, Guangzhou International Convention and Exhibition Center, in Asia. After 2000, Guangzhou began to change its industrial structure and increase its investment in the heavy manufacturing sector. Nowadays, the automobile industry, petrochemical industry, and the IT industry have been the three mainstay industries in Guangzhou.