赛微电子：杨云春累计质押股份8041万股

Group 1 - The core point of the article is that Saiwei Electronics (SZ 300456) announced significant shareholding and pledge details of its controlling shareholder, Yang Yunchun, along with its revenue composition for the first half of 2025 [1] - As of the announcement date, Yang Yunchun holds approximately 179 million shares, accounting for 24.46% of the total share capital of the company [1] - A total of 80.41 million shares have been pledged, which represents 44.9% of Yang Yunchun's holdings and 10.98% of the company's total share capital [1] Group 2 - For the first half of 2025, the revenue composition of Saiwei Electronics is as follows: MEMS industry accounts for 93.43%, other businesses for 4.9%, and semiconductor equipment industry for 1.67% [1] - The current market capitalization of Saiwei Electronics is 18.5 billion yuan [1]