石大胜华股东质押占比9.76%，质押市值约8.51亿元

Group 1 - The core viewpoint of the article highlights the pledge ratio of Shida Shenghua's shareholders, which stands at 9.76% of the total share capital, ranking 950th in the market [1] - As of the last trading day on August 22, Shida Shenghua's shareholders have pledged a total of 22.701 million shares, with a total market value of 850 million yuan [1] - Shida Shenghua New Materials Group Co., Ltd. specializes in the field of new energy materials, focusing on technology research and development in new energy and new materials [1] Group 2 - The company's main products include dimethyl carbonate series, methyl tert-butyl ether series, gas series, other product series, and trading business series [1] - During the reporting period, the company and its subsidiaries held a total of 460 valid patents, including 43 invention patents and 417 utility model patents [1] - The company has obtained 92 new authorized patents during the reporting period, with 16 invention patents (including 5 international invention patents) and 76 utility model patents [1] Group 3 - The stock price of Shida Shenghua has increased by 32.94% over the past year [1] - The company applied for 135 patents during the reporting period, including 47 invention patent applications (with 11 international invention patent applications) and 88 utility model applications [1] - The chairman of the company is Guo Tianming, and the general manager is Yu Haiming [1]