An aluminum electrolytic capacitor is a container made of aluminum, and a core made of a layer of paper sandwiched between the positive and negative electrodes is placed in the container. The function of electrolytic capacitors is to store electric charge. It is an essential component in modern electronic circuits and occupies a very important position in electronic circuits. No matter how the times develop, there is still no component that can replace it. Its quality is directly related to the development of the country and directly affects the future of China's electronic products. About 40% of the components in the complete product are aluminum electrolytic capacitors, and aluminum electrolytic capacitors account for 30%. Aluminum electrolytic capacitors have the characteristics of small size and large capacity, so they can store the largest charge per unit area and have low cost advantages.

Capacitor is one of the indispensable main components in electronic equipment and is widely used in various fields. my country's capacitor industry has grown rapidly, making positive contributions to economic development and national defense modernization. As information technology and electronic equipment continue to develop, demand for capacitors will be steadily released, and the future prospects are still promising. Capacitors, resistors, and inductors are also called the three major passive electronic components. They play the roles of filtering, coupling, DC isolation, and energy storage in circuits. They are essential basic electronic components in electronic circuits.

According to different application scopes, capacitor products can be divided into military market, civilian industrial market, and civilian consumer market. The military market mainly includes aerospace, weapons and electronics, military industry, etc., the civilian industrial market includes rail transportation, automotive electronics, precision instruments, etc., and the civilian consumer market includes digital cameras, smartphones, notebook computers, etc. According to different manufacturing materials, capacitor products can be divided into ceramic capacitors, aluminum electrolytic capacitors, tantalum electrolytic capacitors and film capacitors. The above four categories of capacitors account for more than 95% of the market share.

Mobile communications, electronic equipment, household appliances, etc. have taken off, and capacitors have gained unprecedented development opportunities. Product updates are rapid, the industrial chain has been basically formed, and the independent innovation capabilities of enterprises have improved. It has gradually become a major global producer and exporter of capacitors. The scale of the capacitor market will exceed 100 billion yuan. According to the "2018-2025 China Capacitor Industry Market Forecast and Investment Strategic Planning Analysis Report" released by the Qianzhan Industry Research Institute, there are currently more than 600 capacitor factories of a certain scale in my country. Capacitor sales reached 63.7 billion yuan.

It is expected that by 2025, the capacitor market size will exceed one trillion yuan, reaching approximately 1.5 trillion yuan. Next, the capacitor industry must further enhance its independent innovation and comprehensive competitiveness, accelerate the upgrading of the industrial structure, move closer to mid-to-high-end products, continuously eliminate backward production capacity, realize the transformation from large to strong, and become a global powerhouse in the production of capacitors.