China is the world's largest new energy vehicle market. Driven by the strong demand for new energy vehicles, the price of valuable metals such as nickel, manganese, cobalt and lithium, which are the raw materials of power batteries, has risen rapidly. Lithium carbonate, in particular, rose from more than 50000 yuan per ton to about 430000 yuan a year, an increase of more than 7 times, and nickel and cobalt also increased by more than 60%. The price rise of raw materials has directly led to the soaring price of power battery recycling, which has also brought better profits to recycling enterprises. Insiders told reporters that it takes nearly three months from buying retired power batteries to recycling and selling valuable metals, which makes recycling enterprises enjoy the dividends of subsequent price increases, and the gross profit margin almost doubled. Stimulated by this high profit, there is no lack of hoarding in the industrial chain. However, many people in the industry have begun to worry that there is a huge risk behind the high price. Once the price of relevant metals falls, it will be a stampede crash.