Two closely situated conductors separated by a non-conductive insulating medium constitute a capacitor. When a voltage is applied between the two plates of the capacitor, it stores electric charge. The capacitance of a capacitor is numerically equal to the ratio of the charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance is the farad (F). In circuit diagrams, capacitive components are usually represented by the letter C.

Capacitors play an important role in circuits such as tuning, bypassing, coupling, and filtering. They are used in the tuning circuits of transistor radios, CD players, and recorders, as well as in the coupling and bypass circuits of color televisions.

With the rapid development of electronic information technology, the upgrading of digital electronic products is accelerating. Consumer electronics products, mainly flat-panel televisions (LCD and PDP), laptops, and digital cameras, continue to grow in production and sales, driving the growth of the capacitor industry.

As one of the main electronic components, capacitors account for about 40% of the entire electronic component production. In recent years, with the rapid development of information technology and electronic equipment, as well as the transfer of international manufacturing to China, the demand for capacitors has shown an overall upward trend. China's capacitor industry has also developed rapidly, becoming a major producer and exporter of capacitors in the world.

From 2012 to 2017, the global capacitor market size expanded from $17.3 billion to $20.9 billion, with a steady growth rate of 3.84% (CAGR). During this period, China's capacitor market size increased from 72.6 billion yuan to 98.7 billion yuan, with a CAGR of about 6.33%, higher than the world average. Currently, the global capacitor industry is dominated by Japan, the United States, and China, with Japan leading the way, monopolizing high-end components and possessing the strongest capabilities in industries such as electrolytic capacitors, ceramic capacitors, and thin-film capacitors.

According to data from the General Administration of Customs, from January to July 2018, China exported 60,616 tons of capacitor products, up 10.7% year-on-year, with an export value of 2,696,733 thousand US dollars, up 27.3% year-on-year; it imported 48,363 tons of capacitor products, up 13% year-on-year, with an import value of 6,970,046 thousand US dollars, up 64% year-on-year.

The downstream applications of capacitors mainly include: ① military market: used in aviation, aerospace, ships, weapons, electronic warfare, and other military equipment and weapons fields.

; ② Civil Industrial Market: Applied to system communication equipment, industrial control equipment, medical electronic equipment, rail transit, precision instruments, petroleum exploration equipment, automotive electronics, and other civil industrial fields; ③ Civil Consumer Market: Applied to laptops, digital cameras, mobile phones, audio and video recording equipment, and other civil consumer fields.

The capacitor industry analysis in the capacitor industry research report is based on authoritative national statistical data. It adopts a combination of macro and micro analysis methods, utilizes scientific statistical analysis techniques, and provides a detailed analysis of the capacitor industry while describing the industry overview. This includes the overall status of products, production conditions, key enterprise status, total output of major products, import and export situation, etc. The report mainly uses charts and tables to visually illustrate the industry's economic type composition, scale composition, operating efficiency comparison, production status, and foreign trade situation. It is an essential assistant for enterprises to understand the market situation of the capacitor industry. In terms of format, the report focuses on rich data and charts to highlight the readability and visibility of the article, avoiding clichés and empty talk. The report includes industry-related data, policy and regulation catalogues, major enterprise information, and industry memorabilia, providing investors and industry insiders with a vivid industry panorama.