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QUAD develops superconducting photon detector modules for semiconductor inspection and other applications.
Founded in 2023 and based in Suwon, South Korea, QUAD develops semiconductor inspection technology, including superconducting photon detector modules. In June 2026, it raised KRW 2.1 billion in pre-Series A funding from Bluepoint Partners and Dongkuk Investment to commercialize its modules and pursue defense, space communications, and quantum computing markets.
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