Tosoh
Tosoh is a major in the Materials segment of the semiconductor & AI supply chain, headquartered in Tokyo. Its key customers include TSMC, Samsung Electronics, Intel.
Supplies sputtering targets and quartzware for fabs.
- Ticker
- TSE: 4042
- Headquarters
- Tokyo
- Founded
- 1935
- Revenue
- $6.4B (FY2026) · -4.1% YoY
- Net income
- $260M
- Operating margin
- 11.4%
- Market position
- major
- Value-chain segment
- Sputtering Targets
- Key products
- sputtering targets, quartz
About Tosoh
Tosoh, headquartered in Japan, operates in the Sputtering Targets segment of the semiconductor & AI supply chain and is positioned as a market major there. Its key products include sputtering targets, quartz. wafergraph maps 8 tracked customers for Tosoh across the value chain. It has a supply-chain criticality score of 71/100, with 251 companies downstream of it.
Tosoh Corporation is a global chemical and specialty materials company. The company was founded in 1935 in Yamaguchi Prefecture, as Toyo Soda Manufacturing Co., Ltd., and changed its name to Tosoh Corporation in 1987. Today, its corporate headquarters are in Tokyo, Japan.
Role in the chain
Tosoh is a market major in Materials (Sputtering Targets), headquartered in Japan. Supplies sputtering targets and quartzware for fabs.
Diligence questions
- The dataset names 8 tracked customers for Tosoh. How concentrated is demand among those names, and which of them have a documented second source in this graph?
- Tosoh is headquartered in Japan. What jurisdiction, export-control or logistics risk sits at that HQ, versus at the fabs or plants the filings actually name?
- Tosoh trades as TSE:4042. What does the latest reported period say about capacity and backlog versus the graph position above?
- Before treating any edge as a verified relationship, check the provenance labels on the company page and the method note at /methodology.
Key products
- sputtering targets
- quartz
Customers
More Materials companies
Compare with
JX Advanced Metals · Sumitomo Metal Mining · Ningbo Jiangfeng Electronic Material (Konfoong) · Materion · Mitsubishi Materials · Ferrotec
Sources
Open the interactive supply-chain view →
Cite as: wafergraph, “Tosoh — supply chain, financials & market position”, https://wafergraph.com/company/tosoh (data as of 2026-09-05).
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