According to the industry, aluminum foil, the upstream raw material of aluminum electrolytic capacitors, was strictly controlled by the government, and some small manufacturers were eliminated, resulting in the shortage of aluminum foil, which led to the long delivery time of Japanese electrolytic capacitor manufacturers. In Xinjiang, China, this year, the illegal factories were cleaned up in a big way, and the factories under construction and completed were immediately stopped/stopped, so that the aluminum foil, which was originally oversupplied, quickly turned out of stock. Since last year, the supply of aluminum electrolytic capacitors is very tight due to the increasing demand, and the leading companies will raise prices again, which will play an obvious role in demonstrating and driving the whole industry of aluminum electrolytic capacitors.