Son Tay is engaged in the management of environmental services like waste management, urban sewage management & infrastructure construction.The Company is involved in the regular collection, transportation and treatment of solid, hazardous and industrial waste in Son Tay town, Hanoi. Other regular business activities of the Company include the management and operation of urban sewage systems and public lighting systems, as well as the maintenance and decoration of parks, public gardens and streets. Besides, the Company partakes in the construction and reparation of civil infrastructures, such as roads, walkways and irrigation systems.