Seondo Electric Co., Ltd. manufactures and sells heavy electric equipment. Its products include gas insulated switchgears/vacuum circuit beakers/vacuum circuit systems, switchgears, motor control centers, and transmission line protection relay panels/pole mounted gas switches/gas load breaker switches; monitoring and control systems, including substation total automation systems, remote terminal units, distributed control systems, and supervisory control and data acquisition systems; and circuit breakers and contactors, such as earth leakage circuit breakers, magnetic contactors, home panel boards, reject filters, and ignition transformers. The company also offers environment products comprising diesel soot smoke reducers, electric dust collectors, high voltage units, ion generators, and plasma agricultural chemicals spray equipment. In addition, it provides metal-clad switchgears, instrumentation boards, bus and T/L protection panels, gas-insulated load make and break products, vacuum combination starters, air circuit breakers, solar heat hot water providers and heaters, molded case and earth leakage circuit breakers, magnetic switches, thermal overload relays, ass'y electric dust collectors, and negative ion generators, as well as undertakes electrical works. The company supplies its products for transmission and supply of electricity, atomic energy power plants, water and fire power plants, and various other plants. It serves customers in South Korea, the Middle East, the Americas, and Southeast Asia. The company was formerly known as Seondo Co., Ltd. and changed its name to Seondo Electric Co., Ltd. in May 1987. Seondo Electric Co., Ltd. was founded in 1972 and is headquartered in Ansan, South Korea.