美联新材：控股股东黄伟汕新增质押1.83%股份

Group 1 - The controlling shareholder, Huang Weishan, has pledged an additional 13 million shares, accounting for 5.62% of his holdings and 1.83% of the company's total share capital [1] - The pledge period is from February 2, 2026, to February 2, 2027, with China Galaxy Securities Co., Ltd. as the pledgee [1] - As of the announcement date, Huang Weishan holds 231 million shares, with a total of 82.24 million shares pledged, representing 35.53% of his holdings and 11.56% of the company's total share capital [1]