Group 1: Solid-State Battery Developments - The solid-state battery concept is gaining traction in the A-share market, with multiple listed companies responding to investor inquiries [1] - Hai Muxing is supplying lithium metal high-energy density solid-state battery production line equipment to Xinjie Energy and is also providing sulfide solid-state battery pilot line equipment to a leading global new energy technology company [1] - Huafeng Co., in collaboration with a research team, is developing a new type of solid-state battery that integrates polymer technology with fluorination advantages, achieving significant performance improvements in laboratory tests [1] Group 2: Innovations and Collaborations - Putailai has developed innovative products suitable for solid-state battery sulfide systems, including high-strength, high-elongation alloy foils and perforated copper foils, which are currently undergoing customer evaluations [2] - Sifang Optoelectronics emphasizes the need for thermal runaway monitoring in solid-state batteries to meet safety regulations, offering thermal runaway monitoring sensor products that can adapt to relevant scenarios [2] - Changan Automobile is investing heavily in research and development, aiming to validate solid-state battery installation by 2026 and gradually achieve mass production by 2027, targeting an energy density of 400 Wh/kg [2]