Contract Manufacturing, Electronics and Strategic Supply Chains

Most of the world's phones, laptops, servers, game consoles and network switches are not made by the companies whose names are on them. They are designed by brand owners and built by contract manufacturers — electronics manufacturing services (EMS) firms and original design manufacturers (ODMs) such as Foxconn (Hon Hai), Luxshare, Jabil, Flex, Pegatron, Quanta, Wistron and Celestica — that run enormous factories on single-digit operating margins. The model gives brands capital-light scale and gives manufacturers volume, but it concentrates risk: when workers at Foxconn's Zhengzhou iPhone plant protested and left in Nov 2022, Apple warned that iPhone 14 Pro shipments would be lower than expected. Behind the assembly lines sit two strategic supply chains that governments now treat as matters of national security: semiconductors (designed mostly in the US, fabricated mostly by TSMC in Taiwan, governed by US export controls since Oct 2022 and by a 25% Section 232 tariff on specified advanced computing chips from 15 Jan 2026) and critical minerals (mined widely but processed mostly in China, which imposed rare-earth export licensing on 4 Apr 2025 and a much broader package on 9 Oct 2025 before a one-year truce agreed at Busan on 30 Oct 2025). The 2020–23 chip shortage showed what happens when the buyer forgets those chains: carmakers that cancelled orders in spring 2020 lost millions of vehicles of production for lack of chips costing a few dollars, and in Oct 2025 the Nexperia dispute halted Honda's line in Mexico within weeks (reported). This section explains EMS and ODM economics, Apple's model of control without ownership, Dell's build-to-order model, customer concentration, the shift of contract manufacturers into AI servers, the chip shortage from the buyer's side, and the strategic supply chains — summarising and linking the detailed treatments in AI 01 Semiconductors, AI 20 Geopolitics and Export Controls and Energy 20 Critical Minerals rather than repeating them.