This workshop focuses on advancing global collaboration on open science infrastructure sharing. It will bring together invited experts for in-depth discussions on interoperability, sustainability, and governance of open science infrastructures, with particular emphasis on practical needs of countries in the Global South. Jointly organized by National Science Library of Chinese Academy of Sciences(NSLC) and OpenAIRE, the event aligns with the OS FAIR 2025 theme “Fusing Forces –Accelerating Open Science through Collaboration”, and echoes UNESCO Recommendation on Open Science and the International Decade of Sciences for Sustainable Development (2024–2033).The workshop is designed for policymakers, infrastructure developers, funders, and leaders in the open science community, aiming to build an inclusive, sustainable, and collaborative global framework. It will highlight China’s recent efforts in open science infrastructure and invite international insights to define shared priorities and actionable pathways.Participants will engage in in-depth discussions on key topics such as collaborative implementation pathways, cooperation standards, and organizational mechanisms. The 90-minute workshop will include keynote presentations, expert introductions, and discussions on key issues.