# Who are TCK (Tokai Carbon Korea)'s customers? Who does TCK (Tokai Carbon Korea) earn revenue from?
Canonical: https://valuechain.wiki/tck · Facet: customers · Updated: 2026-09-04T23:10:43.236999+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: TCK (Tokai Carbon Korea)'s confirmed revenue counterparties include 도쿄일렉트론, 어플라이드 머티어리얼즈, 램리서치. Per the valuechain.wiki graph: 3 revenue edges, backed by 5 dated sources, 1 of them primary filings (as of 2026-09-04).

### 도쿄일렉트론 (high)  → /tokyo-electron.md
- metric: Market share >80% · 2024 · global share of SiC etch consumables
- note: Supplies SiC focus rings and consumables to Tokyo Electron, the world's top etch-toolmaker; with 80%+ global share in these consumables, the more TEL tools installed, the more recurring replacement demand — a bottleneck relationship.
- [confirms] TechWorld (KO, news, published 2025-03-01) https://www.epnc.co.kr/news/articleView.html?idxno=223429: "Supplies SiC focus rings and consumables to Tokyo Electron (TEL)."
- [confirms] TheElec (KO, news, published 2024-06-01) https://www.thelec.kr/news/articleView.html?idxno=11503: "Supplies SiC focus rings and consumables to Tokyo Electron (TEL)."

### 케이씨텍 (high)  → /kc-tech.md
- note: Korean equipment/materials maker KC Tech co-founded TCK and holds ~8% — the domestic root of its early SiC material technology.
- [confirms] The Bell (KO, news, published 2021-02-08) https://www.thebell.co.kr/free/content/ArticleView.asp?key=202102081533472000108154: "KC Tech co-founded TCK and holds ~8%."

### 도카이카본 (high)  → /tokai-carbon.md
- note: Japan's Tokai Carbon is the largest shareholder (~51%), tying the core SiC material technology and control to the parent.
- [confirms] The Bell (KO, news, published 2021-02-08) https://www.thebell.co.kr/free/content/ArticleView.asp?key=202102081533472000108154: "Japan’s Tokai Carbon is TCK’s largest shareholder (~51%)."

### 어플라이드 머티어리얼즈 (mid)  → /applied-materials.md
- note: Supplies SiC focus rings and consumables into Applied Materials' etch tools; an indirect toolmaker channel, so revenue tracks Applied's etch-tool shipments rather than any fab.
- [confirms] DART (FSS) (KO, filing, published 2026-03-10) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260310002891: "DART annual report: revenue, customers and business."
- [mentions] Kiwoom & others (KO, research, published 2026-01-16) https://comp.wisereport.co.kr/company/c1080001.aspx?cmp_cd=064760: "Analysts: semi-capex and SiC-ring beneficiary; targets KRW 220,000-347,500."
- [confirms] TCK (English) (EN, ir, published 2025-05-01) https://www.tckc.co.kr/eng/: "Company English IR."
- [confirms] TechWorld (KO, news, published 2025-03-01) https://www.epnc.co.kr/news/articleView.html?idxno=223429: "Supplies SiC focus rings and consumables to Applied Materials."
- [confirms] TheElec (KO, news, published 2024-06-01) https://www.thelec.kr/news/articleView.html?idxno=11503: "Supplies SiC focus rings and consumables to Applied Materials."

### 램리서치 (mid)  → /lam-research.md
- note: Supplies SiC focus rings and consumables into Lam Research etch tools; with Applied, one of the two Western etch-tool anchors, spreading exposure across fabs.
- [confirms] TechWorld (KO, news, published 2025-03-01) https://www.epnc.co.kr/news/articleView.html?idxno=223429: "Supplies SiC focus rings and consumables to Lam Research."
- [confirms] TheElec (KO, news, published 2024-06-01) https://www.thelec.kr/news/articleView.html?idxno=11503: "Supplies SiC focus rings and consumables to Lam Research."

Reverse side: https://valuechain.wiki/tck/suppliers.md · Ripple: https://valuechain.wiki/tck/ripple.md

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Full node: https://valuechain.wiki/tck.md · JSON: https://valuechain.wiki/tck.json