China Unistone Acquisition Corp was a blank-check company formed to acquire a business with primary operations in China, representing one of the early China-focused SPACs to emerge during the mid-2000s wave of cross-border acquisition vehicles. The company filed an S-4 registration statement with the SEC on March 29, 2006, indicating it had identified a proposed business combination and was registering securities in connection with that transaction. Operating under SEC CIK 0001294248, the vehicle reflects heightened investor interest in Chinese growth markets that characterized the 2004 to 2006 SPAC vintage. Sponsor details are not confirmed in publicly available filing summaries. Sign up on SpacDesk for full filing history, sponsor profiles, and deal timelines on this and hundreds of other SPAC transactions.