Investment Rating - The report maintains an "Overweight" rating for the electronic industry [1] Core Insights - The rapid development of AI drives the demand for high-end electronic-grade materials, particularly in functional fillers [4][9] - High-performance ball silicon and low-alpha ball aluminum are critical materials for semiconductor packaging, with significant growth expected in the HBM market [5][49] - The increasing performance requirements of AI servers necessitate upgrades in PCB and CCL materials, leading to a rise in the use of high-performance fillers [16][29] Section Summaries AI Fillers: Driven by AI for High-End Electronic Applications - Semiconductor powder materials are essential for the development of integrated circuits, with silicon and aluminum oxides being core components [12] - The performance of ball silicon powder significantly enhances the reliability of electronic products, while high thermal conductivity ball aluminum is becoming mainstream in thermal interface materials [12][48] High-Speed Copper Clad Laminate (CCL): Accelerated Penetration of High-End CCL and Rising Prices of High-Performance Ball Silicon - The demand for high-performance ball silicon powder is increasing due to the rising number of PCB layers and the need for high-frequency, low-loss materials [37][44] - The market share of high-performance ball silicon powder in the CCL market exceeded 44% in 2021 and is expected to grow further [44] HBM: Low-Alpha Ball Aluminum as a Key Material for HBM Packaging - The HBM market is projected to grow from $2.7 billion in 2022 to $37.7 billion by 2029, with a compound annual growth rate (CAGR) of 38% [50] - Low-alpha ball aluminum is crucial for preventing operational failures in HBM packaging due to its ability to mitigate alpha particle interference [48][51] Recommended Focus: Lianrui New Materials - Lianrui New Materials is a leading domestic producer of electronic-grade silicon powder, focusing on high-end applications and expanding its production capacity [56][59] - The company reported a revenue of 960 million yuan in 2024, a year-on-year increase of 34.94%, driven by AI technology [59]