S/D model update on silicon wafer, SiC substrate, GaN. China capacity and implications to global players As a global team, we review and refresh our S/D model across (1) silicon wafers, (2) SiC substrate, (3) GaN devices, and (4) IGBT (Exhibits 8, 10, 12, 32). Key conclusions: (1) Chinese in China: Local coverage (local production/ local demand) of 12-inch silicon wafer/ 6-inch SiC substrate to grow from 41%/ 80% in 2024 to 54%/ 87% in 2027E. (2) Pricing: 8-inch silicon wafer ASP to decline 10% CAGR in 2024 ...

Investment Rating - The report maintains an "Overweight" (OW) rating on Yangjie Technology and StarPower Semiconductor, while it is "Equal-weight" (EW) on Silan Micro and "Underweight" (UW) on CR Micro [6][5][12]. Core Insights - Power semiconductor pricing has stabilized, but discounts to end customers will impact gross margins in 1Q25. Companies with higher automotive exposure and better operational efficiency are favored [1][5]. - Power discrete sales have shown signs of recovery, with a 10% year-over-year shipment growth recorded in February 2025. The blended average selling price (ASP) of IGBT is stabilizing, indicating a potential recovery in this segment [2][15]. - Chinese power semiconductor companies are capitalizing on automotive opportunities, with Yangjie Technology's automotive product sales growing over 60% in 2024, significantly outpacing its total revenue growth of 12% [3][5]. - SICC has increased its global market share in SiC substrates to 22.8% in 2024, and there are expectations for further growth in SiC devices due to local self-sufficiency being less than 10% [4][12]. Summary by Sections Pricing and Margins - Power semiconductor pricing has largely stabilized, but normal price discounts will affect gross margins in 1Q25 [1]. - StarPower's gross margin is expected to be the lowest quarterly level this year, with gradual improvement anticipated for the rest of the year [2][10]. Company Performance - Yangjie Technology is expected to see an 18% year-over-year revenue increase in 1Q25, although a 3% quarter-over-quarter decline is anticipated due to seasonality [11]. - StarPower's revenue is projected to grow by 19% in 2025, driven by strong demand in the Chinese EV market and its acquisition of MSCT [10][12]. - SICC's revenue is expected to decline by 6% quarter-over-quarter in 1Q25 due to seasonal factors, but gross margins are anticipated to remain stable [10]. Market Trends - The automotive sector is a significant growth driver for power semiconductors, with companies like Yangjie showcasing their automotive solutions at major trade fairs [3]. - The global market for SiC devices is expected to grow, with local players like UNT and Silan Micro making strides in production capacity [4]. Price Target Adjustments - Price targets for StarPower and SICC have been lowered to Rmb115 and Rmb77, respectively, reflecting changes in market conditions and pricing pressures [6][12].