In addition, risk assessment and risk management of environmental nanoparticles and nanomaterials have also been conducted to prevent potential risks. For accomplishing the nanotechnology projects of the NNP, the Taiwan EPA continues its efforts to collaborate with the Institute of Occupational Safety and Health of the Council of Labor Affairs (IOSH of CLA) and the Ministry of Health and Welfare (MOHW) to ensure the sustainable development of nation's responsible nanotechnology program.