# Triple-Stone

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/triple-stone

- Industry: Telecoms
- Headquarters: Zhuhai, China
- Website: www.triple-stone.cn
- Total disclosed funding: $14M
- Latest round: Series D (Jan 31, 2026)
- Investors on record: 11

## About

Based in Guangdong, China, and founded in 2015, Triple-Stone Technology Co. Ltd., trading as Triple-Stone, is a fiber-optic devices company that engages in the R&D and production of mini fiber optic passive devices and hybrid components. The company has 100 employees. Its core team has more than 20 years of experience in the design and production of mini fiber optic passive devices and hybrid components. It has clean rooms and a production base of 4,683 square meters. In January 2026, Triple-Stone raised approximately CNY 100 million in Series D funding led by new investors Guanghe VC and CITIC Goldstone Fund Management, with participation from new investor Zhuhai Science & Technology Venture, returning investors Capital X, Grit Ventures, Skytrace Capital and South China Venture Capital.

The company's products include EDFA hybrid, fiber circulator, fiber isolator, coupler, WDM, photodiode, PM components, Faraday components, and optical switch. Those products are used in the fields of the territory of the military, telecommunications, data centers, 5G base stations, fiber lasers, optical inspection, and optical medicine.
The company generates revenue by doing R&D, and providing fiber optic communication devices.

The Series D funding raised in January 2026 will be used for the construction of a new production base and investment in new product research and development.

## Funding rounds

- Series D, Jan 31, 2026, $14M — CITIC Goldstone Fund Management, South China Venture Capital, Guanghe VC, Grit Ventures, Capital X, Zhuhai Science & Technology Venture, Skytrace Capital
- Series B, Nov 9, 2022 — Tsing-Yuan Capital, Hengqin Financial Investment, Guangzhou Development Zone Construction Development Group Co., Ltd.
- Series A, Nov 8, 2021 — Capital X
- Angel, Jan 31, 2019 — Zhuhai Hi-tech Venture Capital

## Investors

- Zhuhai Hi-tech Venture Capital (https://capitalatlas.ai/funds/zhuhai-hi-tech-venture-capital) — Angel
- Capital X (https://capitalatlas.ai/funds/capital-x) — Series A, Series D
- Tsing-Yuan Capital (https://capitalatlas.ai/funds/tsing-yuan-capital) — Series B
- Hengqin Financial Investment (https://capitalatlas.ai/funds/hengqin-financial-investment) — Series B
- Guangzhou Development Zone Construction Development Group Co., Ltd. — Series B
- CITIC Goldstone Fund Management (https://capitalatlas.ai/funds/citic-goldstone-fund-management) — Series D
- South China Venture Capital (https://capitalatlas.ai/funds/south-china-venture-capital) — Series D
- Guanghe VC (https://capitalatlas.ai/funds/guanghe-vc) — Series D
- Grit Ventures — Series D
- Zhuhai Science & Technology Venture — Series D
- Skytrace Capital (https://capitalatlas.ai/funds/skytrace-capital) — Series D