GOLDEN SUN SECURITIES·2026-01-11 12:44Investment Rating - The report maintains a "Buy" rating for key companies in the IDC sector, including Zhongji Xuchuang, Xinyi Sheng, and Tianfu Communication [5][10][24]. Core Insights - The IDC market is experiencing a shift in supply and demand dynamics, driven by marginal improvements in chip supply and the explosive demand for domestic AI applications [2][20]. - Major domestic companies like ByteDance are significantly increasing their capital expenditure plans, leading to a resurgence in data center bidding activities [1][19]. - The release of NVIDIA's next-generation AI chip platform, "Rubin," is set to redefine hardware standards for high-power, fully liquid-cooled data centers, prompting a global technological upgrade in data centers [4][22][26]. Summary by Sections IDC Market Dynamics - The IDC sector is regaining attention as major companies resume bidding for data centers due to improved chip supply and clear capital expenditure plans [3][21]. - The current valuation of the IDC sector is at a bottom range, providing room for recovery as the national integrated computing network accelerates its systematic construction [3][21]. Supply Chain and AI Applications - The easing of external chip restrictions has allowed internet giants to restart data center bidding, with expectations of improved supply from late 2025 [2][20]. - Continuous iterations of domestic large models are creating real and sustained demand for computing power, which is crucial for data center construction [2][20]. Investment Opportunities - The report suggests focusing on IDC manufacturers such as Dongyangguang, Runze Technology, and Aofei Data, as well as companies in the optical communication and liquid cooling sectors [24][9]. - Key recommended companies include Zhongji Xuchuang, Xinyi Sheng, and Tianfu Communication, among others, with a focus on the optical module industry and domestic computing supply chain [24][9].