# Protontek

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/protontek

- Industry: Medical Devices & Equipment
- Headquarters: Hangzhou, China
- Website: www.protontek.com
- Latest round: Series B (Aug 25, 2025)
- Investors on record: 4

## About

Established in 2015 and based in Hangzhou, China, Hangzhou Proton Technology Co. LTD is a medical device developer, providing vital signs monitoring equipment and medical health solutions. The founding team came from Zhejiang University, Tsinghua University, and the University of California. In May 2016, the company launched children's body temperature patch CarePatch. In April 2018, the company children's body temperature patch CarePatch obtained NMPA (National Medical Products Administration) certification. The company is mainly involved in the field of vital sign monitoring and big health. In August 2025, Protontek closed a series B funding from new investor Casstar Capital. The company's main products include children's body temperature stickers for mobile smart devices, handheld ECG cards and information application management programs, information application management programs, and a cloud server-based doctor's diagnosis and treatment platform. Revenue is generated through development, intelligent hardware production, and sales of medical grade smart biosensor. The company will focus on promote its series of ECG monitoring products that have been approved for listing and further consolidate its technological and market advantages in the fields of wearable ECG and ECG AI.

## Funding rounds

- Series B, Aug 25, 2025 — Casstar Capital
- Series A, Sep 10, 2021 — Qirong Venture Capital, Qikai Investment Management, Silicon Harbour

## Investors

- Qirong Venture Capital (https://capitalatlas.ai/funds/qirong-venture-capital) — Series A
- Qikai Investment Management — Series A
- Silicon Harbour (https://capitalatlas.ai/funds/silicon-harbour) — Series A
- Casstar Capital (https://capitalatlas.ai/funds/casstar-capital) — Series B