The Zhitong Finance App learned that the Hong Kong stock prospectus submitted by Jiangxi Tongbo Technology Co., Ltd. (abbreviation: Tongbo Technology) on January 28, 2026 expired on July 28, 2026. Guojin Securities (Hong Kong) was its sole sponsor at the time of submission.

According to the previous prospectus, Tongbo Technology is an electrolytic copper foil solution provider, focusing on the design, R&D, production and sales of high-performance electrolytic copper foil. According to Frost & Sullivan, the company is the ninth largest producer of electrolytic copper foil in China in terms of sales volume in 2024, with a market share of about 4.0%. Based on 2024 sales volume, the company is also the second largest producer of high-performance lithium battery copper foil in China, with a market share of 13.0%.

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