中铝材料等申请铝合金扁锭及其制备方法等专利，具有较好的机械性能

Group 1 - The State Intellectual Property Office of China has published a patent application for a new aluminum alloy ingot and its preparation method, filed by three companies: China Aluminum Materials Application Research Institute Co., Ltd., Chongqing Guochuang Light Alloy Research Institute Co., Ltd., and Chongqing Dao Metallurgical Technology Co., Ltd. [1] - The patent describes an aluminum alloy ingot with specific composition percentages, including Mg 4.30%-5.20%, Mn 0.40%-0.60%, La 0.05%-0.15%, and others, which contributes to its mechanical properties and processing performance [1]. - The average grain size of the aluminum alloy ingot is specified to be ≤90μm, with intermetallic compound sizes also detailed, indicating a focus on quality and yield in the production of aluminum alloy plate materials [1]. Group 2 - China Aluminum Materials Application Research Institute Co., Ltd. was established in 2017 in Beijing, with a registered capital of 70 million RMB, and has participated in 118 bidding projects and holds 492 patents [2]. - Chongqing Guochuang Light Alloy Research Institute Co., Ltd. was founded in 2021 in Chongqing, with a registered capital of 120 million RMB, participating in 84 bidding projects and holding 66 patents [2]. - Chongqing Dao Metallurgical Technology Co., Ltd. was established in 2023 in Chongqing, with a registered capital of 10 million RMB, and has participated in 1 bidding project [2].