Tokyo Ohka Kogyo → SMIC
As of 2026-09-05, Tokyo Ohka Kogyo is a tracked supplier of SMIC. Tokyo Ohka Kogyo is a leader in Materials (headquartered in Japan); SMIC is a major in Foundry (headquartered in China). Tokyo Ohka Kogyo has 8 tracked customers; SMIC has 168 tracked suppliers.
Data as of 2026-09-05 · relationship type: tracked supplier → customer · both names resolve in companies.json · no dollar amount is shown unless it already sits on a company record, and none is invented here
Why this edge matters
Tokyo Ohka Kogyo (leader in Materials) is a tracked supplier of SMIC (major in Foundry). Photoresist specialist with leading EUV resist share. China's largest foundry, pushing advanced nodes despite export controls. The edge is one of 168 tracked suppliers of SMIC and one of 8 tracked customers of Tokyo Ohka Kogyo.
Source: derived from both company records and the counted edges.
Concentration / risk note
Tokyo Ohka Kogyo is positioned as a leader in Materials, so this edge is harder to replace than a challenger or niche supplier.
Basis: supplier position. Omitted on edges where the graph does not back a concentration claim.
The two companies
Tokyo Ohka Kogyo (supplier)
Photoresist specialist with leading EUV resist share.
SMIC (customer)
China's largest foundry, pushing advanced nodes despite export controls.
Other tracked suppliers of SMIC
Other tracked customers of Tokyo Ohka Kogyo
Cite as: wafergraph, “Tokyo Ohka Kogyo → SMIC — supplier relationship in the semiconductor supply chain”, https://wafergraph.com/relationship/tok/smic/ (data as of 2026-09-05).
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