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Chinese AI Chip Startup SUNMMIO Raises Nearly 2 Billion Yuan in a Year

Published: Oct. 16, 2026  5:04 a.m.  GMT+8
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SUNMMIO is a company that follows the 3D stacked DRAM route, meaning DRAM wafers are stacked directly on top of logic wafers.
SUNMMIO is a company that follows the 3D stacked DRAM route, meaning DRAM wafers are stacked directly on top of logic wafers.

Chinese AI chip startup SUNMMIO has raised nearly 2 billion yuan ($299 million) over the past year, reaching a valuation of 12 billion yuan after its latest funding rounds.

The fundraising reflects a flow of capital into domestic chip developers seeking to close a computing supply gap amid surging AI demand and prolonged restrictions on imports of Nvidia Corp. chips.

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