- Water recycling systems,
- Process water and rainwater collection,
- Seawater desalination,
- Rainwater harvesting and treatment,
- Grisu, Irrigation and drainage machinery and equipment,
- Separation systems,
- Industrial treatment systems,
- Wastewater treatment plant design and construction,
- Wastewater filtration and conditioning products,
- Chemical and physical treatment products,
- Biological treatment,
- Sludge and waste treatment,
- Sewerage drainage and congestion,
- Sludge drying,
- Sludge incinerator (combustion furnace),
- Sludge utilization,
- Heat recovery from wastewater,
- Wastewater systems-energy generation and conservation
