Zhongji Innolight filed confidentially for a Hong Kong initial public offering.
The company supplies high-speed optical transceivers to Nvidia.
The listing could raise at least $3 billion.
Innolight is currently listed on the Shenzhen exchange.
Projected 2025 net income doubled to 10.8 billion yuan ($1.6 billion).
Surging demand for AI data center components drives the expansion.