- Nesscap Co., Ltd engages in the research, development, production and sales of the family of capacitor products including the award winning ultracapacitor, pseudocapacitor and advanced aluminum electrolytic capacitor. Uniquely structured to meet unrelenting energy and power needs of modern applications ranging from portable electronic devices to hi-tech ""green"" cars, NessCap works together with the customer to find the most effective power and energy solution for his requirements.