Guoxin Securities·2026-01-21 05:24Investment Rating - The report maintains an "Outperform" rating for the AI industry [1] Core Insights - The capital expenditure (Capex) guidance from major overseas companies is optimistic, with a continuous upward trend in computing power expected through 2026. The total Capex for Microsoft, Google, Amazon, and Meta is projected to reach $406.5 billion in 2025 and $596.4 billion in 2026, representing year-on-year growth of 46% and 47% respectively [3][5][22] - The demand for AI-related infrastructure is driving significant upgrades in interconnects, cooling, and power supply sectors, indicating a long-term growth cycle distinct from previous technology cycles [3][4] Summary by Sections 1. Overseas Major Companies' Capex Guidance - Major companies like Microsoft, Google, Amazon, and Meta are expected to increase their Capex significantly, with projections of $186.4 billion, $139.5 billion, $162.5 billion, and $108 billion respectively for 2026 [6][7][14][18][21] - The overall Capex for these four companies is expected to account for 62% of the global AI-related Capex, which is projected to reach $960 billion by 2026 [22][23] 2. Interconnect Sector: Optical Modules and PCBs - The interconnect sector is experiencing a fundamental shift in demand due to AI server cluster construction, leading to simultaneous upgrades in computing boards, switches, and optical modules, which will increase both demand and pricing [3][4] - The deployment of 800G technology is expected to accelerate, with 1.6T technology entering the introduction phase [3] 3. Cooling Sector: Liquid Cooling Demand - The power density of AI GPU racks is projected to rise from 130 kW in 2024 to over 1 MW by 2029, making liquid cooling technology essential [3][4] 4. Power Supply Sector: AIDC Power Distribution Evolution - The evolution of AIDC power distribution methods is crucial, with a focus on HVDC and SST technologies to enhance system efficiency and reduce energy losses [3][4] 5. Investment Recommendations - The report suggests focusing on specific companies within various sectors: - Computing power: Haiguang Information - Interconnects - Optical modules: LightSpeed Technology, Huagong Technology - Interconnects - PCBs: Shenghong Technology, Shennan Circuits, and others - Cooling: Invec - Power supply: Magpow [3][4]