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Sumitomo Chemical SUPPLY CHAIN TRACE

MATERIALS🇯🇵 Japan · 4005 · TSE

Sumitomo Chemical is a key supplier of EUV photoresist — the light-sensitive material that defines transistor patterns at atomic scale during lithography — in a market concentrated among a handful of Japanese suppliers. Its materials are present in the production of virtually every leading-edge AI chip manufactured today, giving Japan significant leverage in supply chain diplomacy. Sumitomo also produces compound semiconductors and specialty chemicals used throughout chipmaking.

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Gallium (CN)

Dominant gallium producer for compound semiconductors and RF chips

Chokepoint🇨🇳
RAW MATERIALSsupplies Ga metal for compound semis to

Photoresist Precursors (JP)

Critical chemical precursors for EUV and ArF photoresist made predominantly in Japan

Chokepoint🇯🇵
RAW MATERIALSsupplies EUV resist precursors to

↓ all supply to Sumitomo Chemical ↓

Sumitomo Chemical

Key supplier of EUV photoresist and compound semiconductors

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~10-15% EUV photoresist; ~20% compound semiconductor materials
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↓ Sumitomo Chemical supplies to ↓

TSMC

World's largest contract chip manufacturer

Chokepoint🇹🇼
FOUNDRIESsupplies EUV photoresist to

SMIC

China's largest foundry; capped at 14nm without EUV access; Entity Listed 2020

🇨🇳
FOUNDRIESsupplies photoresist to

Samsung Foundry

Second-largest advanced foundry, competing at 3nm

🇰🇷
FOUNDRIESsupplies EUV photoresist to

Intel Foundry

US-based foundry ramping Intel 18A and 3nm nodes

🇺🇸
FOUNDRIESsupplies EUV photoresist to

Rapidus

Japan's government-backed foundry targeting 2nm by 2027

🇯🇵
FOUNDRIESsupplies EUV photoresist to

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About this company

QWhat is Sumitomo Chemical's role in the AI chip supply chain?

Key supplier of EUV photoresist and compound semiconductors

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