Nittobo manufactures T-glass, a high-performance glass-fiber material used in high-end ABF semiconductor package substrates. Persistent T-glass shortages can directly constrain advanced packaging supply.
The dominant maker of low-thermal-expansion T-glass cloth for AI package substrates and low-dielectric NE glass for data-center boards; a specialty-glass chokepoint whose shortage has been named by the substrate makers as gating high-end ABF supply.
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Nittobo manufactures T-glass, a high-performance glass-fiber material used in high-end ABF semiconductor package substrates. Persistent T-glass shortages can directly constrain advanced packaging supply. The dominant maker of low-thermal-expansion T-glass cloth for AI package substrates and low-dielectric NE glass for data-center boards; a specialty-glass chokepoint whose shortage has been named by the substrate makers as gating high-end ABF supply.
Nittobo ranks 86 of 100 on the AI Infra 100 (November 2026 edition) with a score of 85 out of 100, in Advanced packaging (Fabrication, memory & packaging). Assessment by Frontier Tech Intelligence.
Disco (rank 14), Ibiden (rank 40), ASE Technology Holding (rank 42), Besi (rank 52), Ajinomoto Fine-Techno (rank 64), Unimicron (rank 80).
Nittobo is based in Tokyo, Tokyo, Japan.
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