Aluminum foil for electrolytic capacitors is a corrosive material working under polar conditions, the organizational structure of the aluminum foil have high requirements, the use of aluminum foil is divided into three types: a cathode foil, having a thickness of 0.015mm ~ 0.06mm; high voltage foil thickness to 0.065mm ~ 0.1mm, require high-purity aluminum foil production; low pressure foil thickness of 0.06mm ~ 0.1mm.

Domestic manufacturers of aluminum electrolytic capacitor less, mainly because the market demand is not, and the production technology and advanced countries have a large gap. But the good performance of aluminum electrolytic capacitors, low prices, wide range of uses, so the market outlook is very good. Currently, Japan's annual demand of 45,000 tons, is six times the Chinese market. With the development of the electronics industry, and China has become a major industrial production base, market demand electrolytic capacitor foil prospects.