China Unistone Acquisition Corp (CIK 0001294248) was a blank-check company formed in the mid-2000s to pursue a business combination with a target operating in China or the broader Asia-Pacific region, reflecting early SPAC market interest in emerging-market deal flow. On November 3, 2006, the company filed an S-4/A — an amended registration statement — with the SEC, indicating it was in the active stages of completing a proposed merger or acquisition requiring formal shareholder disclosure and approval. The S-4/A amendment is a standard procedural step in the de-SPAC process for transactions of that era. Visit SpacDesk and sign up for full access to China Unistone's complete filing history, deal timeline, and comparable SPAC transaction data.