During the two weeks from 8-19/10/2019, Researcher Ms. Thanh Huyen Tran from CEFD has attended two events: International Expert Seminar on Water Use - Waste and Wastewater Technologies organized by University of Siegen and IFAT2019 International Fair on Water and Wastewater technologies organized by the German Academic Exchange Service (DAAD), Germany. This activity belongs to the German Alumni Programme and DAAD Alumni Programme which aim to connect all alumnis of the developing countries who have achieved DAAD scholarships and studied in Germany. This is a precious opportunity for all senior and junior experts in the fields of water, waste water and solid waste management to gather together for networking, fruitful discussions on the current situation of their home contries, knowledge exchange and experience sharing. Ms. Huyen Tran is one of 3 representatives of Vietnam, together with other experts from Nepal, India, Indonesia, Thailand, Bangladesh to bring the voice to the seminar and the IFAT 2019.