Network Infrastructure Services Joint Stock Company is engaged in building and leasing telecommunications infrastructure in Vietnam. It is involved in the purchase, sale, installation, repair, and maintenance of telecommunications, information technology, and lightning protection equipment; construction of telecommunication antennas and columns; and construction of civil, industrial, transport, irrigation, engineering, and industrial power infrastructure. The company is also engaged in the purchase, sale, installation, repair, and maintenance of fire alarm, fire protection, automatic fire, equipment monitoring, and automatic sound and image control systems; and leasing of telecommunications equipment. In addition, it provides business application services for Internet and telecommunications systems; quality monitoring services for network devices, telecommunications services, and information technology; and value-added services, such as access to data services, data processing services, and online information services to telecommunication networks. Network Infrastructure Services Joint Stock Company was founded in 2006 and is headquartered in Hanoi, Vietnam.