As global demand for strategic minerals continues to rise in the era of energy transition, Indonesia faces both significant opportunities and challenges in mineral downstreaming. To realize a sustainable mining and processing industry, integrating the principles of the ecology industry has become imperative. Value-added development must also align with post-mining reclamation and integrated environmental management in accordance with regulations, in order to strengthen cross-sector synergy and build an adaptive, responsible, and sustainability-oriented industrial ecosystem for Indonesia's future.