Investment Rating - The report does not explicitly state an investment rating for the industry [21]. Core Insights - The solid-state battery industry is advancing, with the China Automotive Engineering Society releasing a group standard for solid-state batteries, clarifying definitions and testing methods, which lays the foundation for technological upgrades and industrial applications. Notable developments include BMW's first solid-state electric vehicles undergoing testing and domestic companies like Jinlongyu signing orders for high-energy density solid-state battery cells [3][4]. - The humanoid robot sector is gaining traction, highlighted by the first humanoid robot combat competition, which is expected to enhance interest in the sector. Recent demonstrations by Tesla and Figure's humanoid robots working in BMW factories contribute to this growing enthusiasm [3][4]. - The photovoltaic sector is experiencing increased demand for inverters, with April 2025 exports from China reaching $810 million, a 17% year-on-year increase. European inverter exports also saw significant growth, driven by demand recovery due to power outages [3][4]. Summary by Sections Market Overview - In the past week, the mechanical equipment, electric power equipment, and automotive industry indices experienced declines of -2.48%, -0.71%, and an increase of +1.24%, respectively, ranking 30th, 16th, and 2nd among 31 Shenwan primary industries [8][10]. Industry News and Key Company Announcements - The humanoid robot combat competition is set to showcase advancements in AI and robotics, promoting technological upgrades and large-scale applications [18]. - Innovations in solar cell materials, particularly perovskite, have achieved stable mass production, marking a significant transition from laboratory to industrial application [18]. - The report highlights the ongoing development of humanoid robots by various companies, including Tesla's advancements in learning and task execution capabilities [18][19].