科达制造：股东梁桐灿累计质押股份约2.23亿股

Group 1 - The core point of the news is that Keda Manufacturing (SH 600499) announced the release and re-pledging of shares by its major shareholder, Liang Tongcan, affecting a significant portion of the company's total shares [1] - Liang Tongcan has released part of his pledged shares and re-pledged approximately 223 million shares, which accounts for 59.57% of his holdings and 11.63% of the company's total share capital [1] - As of October 21, 2025, Liang Tongcan and his concerted party, Guangdong Hongyu Group, hold about 439 million shares, representing 22.88% of the total share capital, with a total of 287 million shares pledged, which is 65.5% of their holdings and 14.99% of the total share capital [1] Group 2 - For the fiscal year 2024, Keda Manufacturing's revenue composition is as follows: 53.32% from the machinery equipment industry, 37.42% from the overseas ceramics industry, 6.99% from lithium battery materials, 2.19% from other equipment, and 0.08% from other businesses [1] - The current market capitalization of Keda Manufacturing is 22.6 billion yuan [2]