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Sunmmio develops 3D computing chips for AI inference applications.
Sunmmio develops 3D computing chips, including its A4 inference chip, to address memory bandwidth limits in AI model computation. It works with technology firms and data centers on AI computing solutions. Founded in 2022 and based in Beijing, China, the company was founded by Dr. Fuquan Wang and closed a pre-Series A1 round in February 2026.
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