百川股份：郑铁江累计质押公司股份620.27万股

Group 1 - The core point of the article is that Baichuan Co., Ltd. announced the release and re-pledging of shares by its controlling shareholder Zheng Tiejiang, indicating ongoing financing activities [2] - Zheng Tiejiang released 6.2027 million shares, which accounts for 7.36% of his holdings and 1.04% of the company's total share capital [2] - Simultaneously, Zheng Tiejiang re-pledged the same amount of shares (6.2027 million), with the purpose of the pledge being for financing needs [2]