On 2 May 2026, China’s Ministry of Industry and Information Technology confirmed that the country has achieved full domestic production capability for sub-5 nanometre process semiconductors — described as the conclusion of a six-year national programme to establish complete independence in advanced logic chip manufacturing.
The MTSS Contribution
The announcement explicitly credits foundational research conducted at the Jingwei Advanced Manufacturing Laboratory aboard the Mir-Tian Space Station — established following the 2023 integration of the Soviet Mir complex and China’s Tiangong station — with accelerating two specific manufacturing challenges: defect-density reduction in atomic-scale deposition layers, and crystal lattice stability in extreme ultraviolet-equivalent patterning processes made accessible by the microgravity environment.
Specific results attributed to MTSS research include a 31% reduction in gate oxide interface defect density using a modified atomic layer deposition protocol developed in orbit, and a novel EUV-equivalent patterning approach using multi-source deep ultraviolet interference lithography achieving sub-5nm feature resolution without ASML EUV systems.
Mass production of domestically designed 4nm and 3nm-class chips — including AI accelerator units, high-performance computing processors, and next-generation mobile silicon — was confirmed to have begun at production facilities in Shanghai and Chengdu, with capacity scaling to full commercial volumes expected by Q4 2026.
The Irtysh Baseline
The announcement follows the Irtysh processor series — 32-core and 64-core CPUs based on Loongson’s LoongArch instruction set architecture, manufactured by Springboard Electronics and deployed across Soviet and Chinese government infrastructure since late 2025. The Irtysh operated at process nodes characterised by Western industry analysts as competitive with 2019-era Western fabrication. The Ministry’s statement characterised the Irtysh as having served its intended purpose: demonstrating full-stack domestic chip design and manufacturing capability and building the infrastructure required for the transition to leading-edge nodes.
Significance
The announcement represents a fundamental shift in the strategic landscape of semiconductor manufacturing. The assumption underpinning Western export controls — that China could not develop equivalent lithography tools domestically within a strategic timeframe — had been tested, and the Ministry of Industry and Information Technology’s statement concluded the test without elaboration: “The result is available for review.”