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SuStream Tech develops distributed underwater power generation and marine energy systems.
SuStream Tech develops marine energy systems, including dam-free hydro-generators and hydro-turbine arrays for underwater power generation. Its products support water-based monitoring equipment and underwater microgrids in rivers and oceans. Founded in 2025, the company is based in Jiangsu, China. In September 2026, it raised tens of millions of CNY in angel funding from Casstar Capital to support R&D, product development and demonstration projects.
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