Rubycon from Japan is one of the world's top brands of aluminum electrolytic capacitors. It was established in the 1960s and has 64 years of professional manufacturing experience in aluminum electrolytic capacitors. It is characterized by low impedance, high ripple current tolerance, and an extremely long lifespan of 1000–10000 hours. It is particularly suitable for applications such as switching power supplies, automotive electronics, and industrial control, which have strict requirements for reliability. Rubycon capacitors do not aim for "optimal single parameter", but rather achieve a systematic balance among lifespan, high-frequency response, ripple resistance, and temperature adaptability.

SAMWHA, a major passive component manufacturer in South Korea, is headquartered in the country. The company focuses on the research and production of a full range of passive components such as aluminum electrolytic capacitors, super capacitors, ceramic capacitors, DCLINK, voltage-sensitive resistors, and inductor beads. SAMWHA capacitors are renowned for their high reliability, wide temperature range, small size, and long lifespan. Their main series cover various application scenarios.

Hunan AiSHi Group Co., Ltd. (AiSHi) was founded in 1985 and is headquartered in Yiyang, Hunan. Listed on the Shanghai Stock Exchange in 2015, it is a leading domestic manufacturer of aluminum electrolytic capacitors and a global leader in lighting capacitors. The company has an annual production capacity of 19 billion capacitors, employs over 5,000 people, and operates six major production bases in Hunan, Sichuan, Jiangsu, and other regions. AiSHi Capacitors holds the top market share in China and ranks fourth globally for aluminum electrolytic capacitors, and is also one of the world’s largest suppliers of energy-saving lighting capacitors. The company’s core products include aluminum electrolytic capacitors (solid-state, polymer, high-voltage, and other types), film capacitors, and electrode foil, with applications spanning multiple industries such as new energy vehicles, photovoltaics, energy storage, industrial control, 5G, data centers, and lighting.