# Sitrus Technology

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/sitrus-technology

- Industry: Electronics
- Headquarters: Shanghai, China
- Total disclosed funding: $27M
- Latest round: Series D (Feb 26, 2026)
- Investors on record: 14

## About

Based in Shanghai, China, and founded in 2017, Sitrus Technology is a chip company engaged in the development of high-speed optical module DSP chips. The founder was once the Serdes developer and served as a member of several international standards-setting committees for high-speed data interconnection, such as PCI Express and SRio. In February 2026, Sitrus Technology raised a series D+ funding from Jiaoyuan Assets, and Casstar Capital, Dingxin Capital.
The company's main products include high-speed data transmission chips based on CMOS technology, which can be used in high-speed data communication, optical networks, cloud computing, and other fields. Its products cover the needs of the telecommunications and data communication markets. It also provides customized services tailored to user needs. 
The company generates revenue by manufacturing integrated circuits and IP cores.

## Funding rounds

- Series D, Feb 26, 2026 — Casstar Capital, Dingxin Capital
- Series C, Aug 23, 2023, $27M — Casstar Capital, Henglu Asset Management
- Series C, May 16, 2023 — Dingxin Capital, Xinjiang Lanshi Venture Capital Limited Partnership, Jiangsu Xinchao Innovation Investment Group
- Series B, Nov 6, 2020 — Infinity Group, Zhongnan Capital, Anxin Capital, Shenzhen Qianhai Pengchen Investment Management, Shangrong Capital, SK (China) Enterprise Management Co., Ltd., Suzhou Yongxin Fangzhou Investment
- Series A, Mar 19, 2019 — Haitong-Fortis Private Equity Fund Management, China-Belgium Direct Equity Investment Fund, SK (China) Enterprise Management Co., Ltd.
- Angel, Aug 16, 2018 — Casstar Capital

## Investors

- Casstar Capital (https://capitalatlas.ai/funds/casstar-capital) — Angel, Series C, Series D
- Haitong-Fortis Private Equity Fund Management (https://capitalatlas.ai/funds/haitong-fortis-private-equity-fund-management) — Series A
- China-Belgium Direct Equity Investment Fund — Series A
- SK (China) Enterprise Management Co., Ltd. — Series A, Series B
- Infinity Group (https://capitalatlas.ai/funds/infinity-group) — Series B
- Zhongnan Capital (https://capitalatlas.ai/funds/zhongnan-capital) — Series B
- Anxin Capital (https://capitalatlas.ai/funds/anxin-capital) — Series B
- Shenzhen Qianhai Pengchen Investment Management (https://capitalatlas.ai/funds/shenzhen-qianhai-pengchen-investment-management) — Series B
- Shangrong Capital — Series B
- Suzhou Yongxin Fangzhou Investment (https://capitalatlas.ai/funds/suzhou-yongxin-fangzhou-investment) — Series B
- Dingxin Capital — Series C, Series D
- Xinjiang Lanshi Venture Capital Limited Partnership — Series C
- Jiangsu Xinchao Innovation Investment Group (https://capitalatlas.ai/funds/jiangsu-xinchao-innovation-investment-group) — Series C
- Henglu Asset Management (https://capitalatlas.ai/funds/henglu-asset-management) — Series C