The global financial crisis triggered by the US economic crisis of about 2,500 yuan to 3,500 yuan is estimated to continue for some time. Recently, international commodity futures plummeted, and the prices of copper, aluminum, iron and other commodities all fell. The demand of enterprises for copper, aluminum and iron decreased greatly, and terminal buyers had to lower the purchase price according to the situation. "In the past month, the prices of materials such as scrap copper, scrap iron and plastics have fallen sharply, which is closely related to the financial crisis. This is the case all over the country. " According to the analyst of Chengdu Tianfu Waste Recycling Network, most of the waste products purchased by China are used for recycling and reprocessing, used as industrial raw materials for manufacturing, and then exported into finished products. Now the international financial crisis first affects foreign trade. Once foreign trade shrinks, China's scrap purchasing industry is directly affected, and the price of raw materials naturally falls again and again.