35
Business management of municipal, industrial, and commercial water and waste water treatment systems and sludge incineration facilities for others; procurement services; purchasing of municipal and industrial commercial water and waste water treatment systems and sludge incineration facilities; business management of power plants for others; business development of power plants; business acquisition of power plants; management of sewerage systems, treatment systems and water billing systems; consultancy services relating to all of the aforesaid
37
Construction and maintenance of municipal, industrial and commercial water and waste water treatment systems and sludge incineration facilities; construction and maintenance of power plants; consultancy services relating to all of the aforesaid
39
Public utility services in the nature of supplying water and distributing treated water, power and steam; utility services in the nature of electricity distribution; utility services namely transmission of electricity, operation of pipelines; consultancy services relating to all the aforesaid
40
Generation of electricity, generation of power, water treatment and production of steam; municipal, industrial and commercial water and waste water treatment services and sludge incineration services; operation of power plants (generation of energy); utility services in the nature of municipal, industrial and commercial water and waste water treatment systems and sludge and waste incineration and water disposal facilities; consultancy related to the above in this class
42
Architectural design of municipal, industrial and commercial water and waste water treatment systems and sludge incineration facilities, power plants, and waste incineration; design and engineering of municipal, industrial and commercial water and waste water treatment systems and sludge incineration facilities; design and engineering of power plants; environmental services, consulting, and providing environmental infrastructure for water treatment services; consultancy services relating to all of the aforesaid