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Triple-Stone develops and manufactures miniature fiber-optic passive devices and hybrid components.
Founded in 2015 and based in Guangdong, China, Triple-Stone manufactures fiber-optic devices for military, telecommunications, data center, 5G, laser, inspection, and medical applications. Its products include fiber circulators, isolators, couplers, WDMs, and optical switches. In January 2026, it raised approximately CNY 100 million in Series D funding to build a production base and support product research and development.
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