Electrolytic capacitor is the key device of power supply, and its life and reliability directly affect the life of the whole power supply.
Although electrolytic capacitor is aluminum shell and aluminum strip, it seems that anyone can do it, but the key technology is still in Japan, the United States, Germany and other countries. Japanese Nichicon, Japanese National Chemical Corporation (NCC), Rubycon, American CDE, EPCOS high-capacity bolt electrolytic capacitors have good quality.
The rivers and seas in China are not bad, and the cost performance is higher than that in Japan.