Tokyo Ohka Kogyo
Tokyo Ohka Kogyo is a leader in the Materials segment of the semiconductor & AI supply chain, headquartered in Kawasaki. Its key customers include TSMC, Samsung Electronics, SK hynix.
Photoresist specialist with leading EUV resist share.
- Ticker
- TSE: 4186
- Headquarters
- Kawasaki
- Founded
- 1940
- Revenue
- $1.4B (FY2025) · +17.9% YoY
- Net income
- $204M
- Operating margin
- 8.3%
- Market position
- leader
- Value-chain segment
- Photoresists & Chemicals
- Key products
- EUV/ArF/KrF resists
About Tokyo Ohka Kogyo
Tokyo Ohka Kogyo, headquartered in Japan, operates in the Photoresists & Chemicals segment of the semiconductor & AI supply chain and is positioned as a market leader there. Its key products include EUV/ArF/KrF resists. wafergraph maps 8 tracked customers for Tokyo Ohka Kogyo across the value chain. It has a supply-chain criticality score of 83/100, with 242 companies downstream of it.
Key products
- EUV/ArF/KrF resists