AI 资料中心规模虽然巨大，但决定性的运作发生在微观层面：微型马达驱动风扇，细如丝的液流经由铜板流经以散热。微小的制造偏差即可使整台设备失声停机。每一代 AI 晶片都提高了对这些零件的需求，过去伺服器机架仅需数十条光纤连接，如今却需要数万条，并在从记忆体晶片到电池与电源控制子系统的各环节形成瓶颈。

光纤最能直接反映出需求缺口。AI 设施处理的流量远高于一般云端，因此光纤成为核心瓶颈。Corning 已与 Meta Platforms 签订 6 billion（约 6×10^9 美元）供应协议，并与 Nvidia 签下 500 million（约 5×10^8 美元）股票交易。Fujikura Ltd 在过去一年股价上涨超过 500%，Furukawa Electric Co 则上涨超过 800%，这是 AI 引发供应压力被市场快速定价的讯号。

在设备层面，一部 Nvidia 伺服器可含 30,000 颗 MLCC（多层陶瓷电容），完整机架甚至可达 440,000 颗；每颗 MLCC 小于一粒沙，却含有数百层陶瓷与金属，于 1,000°C（约1000摄氏度）以上烧结。Murata Manufacturing 掌握高端 AI 伺服器 MLCC 市场 45%，但目前接单速度约为其年度产能的两倍，且交期被拉长至 20–30 周。另一方面，转速 20,000 rpm（约每秒 333 转）的机架风扇依赖 2 至 4 个外径 10 毫米或以下的球轴承，Minebea Mitsumi 每月生产约 350 百万颗（超过 4 亿颗/年），仍无法满足需求。

AI data centers are gigantic in footprint, yet the critical operations happen at microscopic scale: tiny motors drive fans, and thread-like liquid channels flow through copper plates to dissipate heat. Tiny manufacturing deviations can render whole machines silent. Each AI chip generation raises demand for these parts, and server racks that once used only dozens of fiber-optic links now require tens of thousands, creating bottlenecks across systems from memory chips to battery and power-control subsystems.

Fiber optics most clearly reflects the demand gap. AI facilities handle much more data traffic than conventional clouds, so optical fiber has become a central bottleneck. Corning has secured a 6 billion dollar supply agreement with Meta Platforms and a 500 million dollar stock deal with Nvidia. Fujikura Ltd shares are up more than 500% in the past year, while Furukawa Electric Co shares are up over 800%, a signal that the market is rapidly repricing AI-induced supply stress.

At the device level, one Nvidia server may contain 30,000 MLCCs, and a full rack up to 440,000; each MLCC, smaller than a grain of sand, contains hundreds of ceramic-metal layers and is sintered above 1,000°C. Murata Manufacturing controls 45% of the high-end AI-server MLCC market, yet is fielding inquiries at roughly twice its annual capacity and facing 20–30 week lead times. Meanwhile, a rack fan running at 20,000 rpm (about 333 rev/s) depends on two to four ball bearings with outer diameters of 10 mm or less; Minebea Mitsumi produces about 350 million units per month (over 4 billion per year) but still cannot meet demand.