Dioo Microcircuits (688381.SH) has revealed its plan to purchase the entire 100% stake in Rongpai Semiconductor, currently owned by 16 shareholders, including Dong Zhiwei. This acquisition will be facilitated through a combination of share issuance and cash payment. Moreover, Dioo Microcircuits intends to secure additional matching funds via a non-public share offering. Once the deal is finalized, Dioo Microcircuits will gain direct ownership of all the equity in Rongpai Semiconductor. Trading of Dioo Microcircuits' shares is set to resume at the market's opening on October 21, 2025.

Rongpai Semiconductor is a company dedicated to the design, research, development, and marketing of high-performance, premium-quality analog chips. Its product range encompasses digital isolators and other series, which find widespread application across numerous industries. Utilizing its proprietary technology, Rongpai Semiconductor has secured multiple invention patents within the isolation domain, marking significant advancements in the production of domestically-made isolation chips.