CATL (03750) opened nearly 5% higher, rising 4.97% to HK$503 by the time of writing, with a turnover of HK$104 million. The surge follows the signing of a memorandum of understanding between CATL and Rio Tinto Group. The two companies will engage in deep collaboration across three key areas: strategic development and innovation in electrification, supply chain and circular economy initiatives, and business and cooperation mechanisms. The partnership aims to capture new industrial opportunities arising from the global shift toward low-carbon transformation. Under the memorandum, the focus will be on advancing electrification applications in mining operations, exploring commercial pathways for battery material recycling and the sustainable development of critical mineral resources, and studying circular economy practices and diversified cooperation models. CATL will leverage its strengths in battery technology, system integration, and new energy solutions to help Rio Tinto improve operational efficiency and advance carbon reduction and electrification efforts. Moving forward, the collaboration aims to develop globally exemplary zero-carbon mining solutions, supporting the deep transformation of the global energy system.