相对成本优势逐渐凸显，产业化进展加快

Investment Rating - The industry investment rating is "Buy" with a previous rating of "Buy" as well [2]. Core Insights - The relative cost advantage of composite copper foil is becoming increasingly prominent, with accelerated industrialization progress [5]. - The average copper price has risen significantly from less than 50,000 CNY/ton in 2020 to an average of 80,800 CNY/ton in 2025, and has exceeded 100,000 CNY/ton in 2026, highlighting the cost advantages of composite copper foil over traditional battery copper foil [5]. - Companies like Shengli Precision are beginning close collaborations with battery manufacturers, which is expected to drive equipment demand [5]. - The Anmaite composite fluid project is nearing completion, with an investment of approximately 5 billion CNY and a designed annual production capacity of 1 billion square meters of composite fluid materials [5]. - Yinglian Co. has partnered with LG to develop innovative polymer substrates for composite fluids and solid-state batteries, accelerating their entry into the global market [5]. - The report recommends focusing on equipment manufacturers such as Sanfu Xinke and Dongwei Technology, as well as material companies like Shengli Precision and Yinglian Co. due to the low penetration rate and rapid development slope of the composite copper foil industry [5]. Summary by Sections Industry Overview - The composite copper foil industry is experiencing a shift with increasing demand and a focus on equipment capacity as a critical factor for industrialization [5]. Key Companies - Shengli Precision is actively engaging with leading enterprises for product validation and expansion plans [5]. - Anmaite's project aims to meet the production needs of approximately 100 GWh of power, energy storage, and 3C new energy batteries [5]. - Yinglian Co. is collaborating with LG to explore new materials for the battery market [5]. Financial Analysis - The report includes a valuation table for key companies, indicating a "Buy" rating for Jiao Cheng Ultrasonic with a reasonable value of 80.61 CNY per share and projected PE ratios for 2025 and 2026 [6].