Xin Lang Cai Jing·2025-12-03 13:21Group 1: Data Center Short-Distance Transmission Solutions - AOC (Active Optical Cable) is defined as an integrated optical fiber cable with built-in optical transceiver modules at both ends, functioning as a complete product of optical modules, fiber, and connectors, primarily used for interconnection between racks with a transmission distance of up to 100 meters [1][20]. - DAC (Direct Attach Copper) is a passive copper cable without built-in chips, designed for physical connections using copper conductors to transmit electrical signals, mainly used for connections within cabinets, with a very short transmission distance of up to 3 meters due to high-frequency signal attenuation [1][20]. - ACC (Active Copper Cable) integrates a signal driver (Redriver chip) at the receiving end to amplify and equalize the signal, providing a balanced solution in terms of performance, cost, and power consumption [1][20]. - AEC (Active Electrical Cable) is a high-performance active copper cable that integrates a retimer chip at both ends, allowing for more precise signal compensation and extending the transmission distance to 10 meters, filling the gap between DAC and AOC [1][20]. Group 2: AEC Supply Landscape - Major overseas manufacturers in the AEC market include Credo, Amphenol, Broadcom, Molex, and Marvell, with Credo being the global leader and standard setter, supplying to Microsoft and Amazon [4][13]. - Amphenol is recognized as a leading global connector manufacturer and a primary supplier of copper cables to NVIDIA [5][14]. - Domestic leading manufacturers include Wolong Nuclear Materials, which ranks first in domestic revenue for high-speed communication cables and supplies AEC materials to Amphenol, Molex, and TE Connectivity [6][15]. - Other notable domestic players include Shenyu Co., a leader in high-frequency RF coaxial cables supplying AEC materials to Amphenol, and Zhaolong Interconnect, which focuses on high-speed interconnection in data centers [6][16][17]. - Changxin Bochuang is developing a full-stack optoelectronic interconnection solution, supplying AOC, AEC, and MPO through its subsidiary [6][18]. - Xinya Electronics specializes in high-frequency and high-speed data cables, collaborating with Amphenol to develop a new structure copper cable that overcomes traditional manufacturing dependencies [6][19].