Mr. Hu presently serves as the Director of the Division of Science Policy and Basic Sciences at the United Nations Educational, Scientific and Cultural Organization (UNESCO). With an extensive background in international organizations, he has notably contributed to the United Nations Environment Programme (UNEP), particularly within its Asia-Pacific Office. Within this capacity, Mr. Hu assumed multiple roles, including Programme Officer, Pacific Islands Regional Coordinator, Southeast Asia Regional Coordinator, and Senior Regional Coordinator for Asia/Pacific. His responsibilities encompassed providing comprehensive policy and technical support, facilitating national strategy formulation and implementation, fostering institutional capacity, advancing science and technology dissemination, and enhancing public awareness. His primary focus centered on aiding developing countries in the region in implementing the Montreal Protocol and mitigating climate change challenges. Before his tenure at the UNEP Asia-Pacific Office, Mr. Hu served at the UNEP's Paris Office, where he contributed to information exchange pertaining to ozone layer protection policies and technical aspects. He also dedicated significant efforts from 1994 to 1999 to activities concerning the Montreal Protocol's implementation at the predecessor organization of China's Ministry of Ecology and Environment.