CAST provides eco-friendly ozone and radical sterilization solutions that use only air and oxygen without using any chemicals for agri-food, water and environment based on low-temperature microplasma technology. This innovative technology can reduce carbon emissions because it doesn’t use chemicals to disinfect water and food. CAST solution reduces chlorine usage in the swimming pool, wastewater and drinking water treatment. The solution is using the KOICA Creative Technology Solution Program, which is an ODA program funded by the Korean government, and through this, they are making efforts to introduce innovative sterilization solutions into Cambodia and Tanzania to supply good water and to increase income for farmers and local people through the provision of safe drinking water and food.