公告精选︱长江材料：拟不超过1.3亿元投资油气勘查项目；首开股份：盈信公司间接持有的宇树科技股权比例约为0.3%，持股比例很低

Key Points - The article highlights various corporate announcements and activities, including investments, acquisitions, share buybacks, and operational data from different companies [1][2] Group 1: Corporate Announcements - Shoukai Co., Ltd. (首开股份) has a low indirect shareholding of approximately 0.3% in Yushut Technology [1] - Changjiang Materials (长江材料) plans to invest no more than 130 million yuan in an oil and gas exploration project [1] - Tianyong Intelligent (天永智能) won a bid for a 20.3 million yuan project related to engine assembly line renovation [1] - Yangjie Technology (扬杰科技) intends to acquire 100% of Beite Electronics [1] - Shanghai Yizhong (上海谊众) proposes a share buyback of 30 to 35 million yuan [1] Group 2: Operational Data - Xintian Green Energy (新天绿能) reported an increase of 23.53% in power generation in August year-on-year [1] - *ST Tianshan (天山) recorded livestock sales revenue of 549,000 yuan in August [1] Group 3: Shareholding Changes - Huahai Chengke (华海诚科) shareholder Yang Senwu plans to reduce holdings by up to 3% [1][2] - Futec Technology (富特科技) intends to reduce holdings by no more than 3% [1] - Zhiyuan New Energy (致远新能) controlling shareholder plans to reduce holdings by up to 3% [1] - Aike Technology (爱科科技) plans to issue convertible bonds to raise no more than 311 million yuan [1] - Shiji Information (石基信息) is set to collaborate with Zhejiang Feizhu on direct connection services [1]