Class 037
Construction and Repair Services
Construction, installation, maintenance and repair of wastewater treatment and purification systems and plants; construction, installation, maintenance and repair of energy and electricity generation systems and plants
Class 040
Treatment & Processing of Materials Services
Wastewater treatment and purification; generation of energy; generation of electricity
Class 042
Computer & Software Services & Scientific Services
Engineering services and engineering consultation for the construction of water treatment and purification systems and plants; engineering services and engineering consultation for the construction of electricity generation systems and plants
