With the development of electronic information industry and the popularization of household appliances, the capacitor industry has achieved unprecedented development, which meets the needs of the development of electronic complete machines and household appliances in terms of quantity, quality and service, and drives the development of related materials industry, equipment industry and instrument industry. China has now become a major capacitor producer in the world. In terms of sales volume, capacitor production is mainly concentrated in Japan, Mainland China and Taiwan, and China has become the largest producer of capacitor products after Japan in the world. In terms of quantity, since the reform and opening up, Japan, South Korea and Taiwan have turned the capacitor manufacturing industry to the mainland of China. The world electronic information whole machine manufacturing industry has set up factories in the mainland of China, and multinational companies have purchased in the mainland of China. China has become a big country of capacitor production and consumption in the world.