Gunkul Engineering Public Company Limited, together with its subsidiaries, engages in manufacturing, distribution, import, and export of equipment for electrical systems in Thailand, Japan, Vietnam, and internationally. It operates through four segments: Manufacturing and Selling of Equipments for Electrical Systems; Generating and Selling Electricity; Construction Service; and Maintenance Service, Rental Service, and Others. The company engages in the construction and investing in the generating and selling electricity business; generating and selling electricity; construction; manufacturing and selling of energy - saving products; and investing in real estate, as well as provision of training services. It also offers cables and accessories, fuses and switches, hardware and connectors, insulators, lightning protection products and systems, service and maintenance equipment, tools and instruments, hoists, pulling and wire grips, ground rods and clamps, welding powder and molds, fuses, switchgears, circuit breakers, instrument transformers, street lighting, live part covers and animal protection systems, and meters and accessories. The company was incorporated in 1982 and is based in Bangkok, Thailand.