# Who does Carl Zeiss SMT pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/carl-zeiss-smt · Facet: suppliers · Updated: 2026-07-12T05:45:12.448189+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Carl Zeiss SMT discloses no named confirmed suppliers/cost counterparties; 2 relationships are tracked as undisclosed/aggregate. Per the valuechain.wiki graph: 2 cost edges, backed by 2 dated sources, 0 of them primary filings (as of 2026-07-12).

### 초정밀 광학 가공·소재 (비공개) (mid)
- note: Atom-scale polishing and special glass (undisclosed).
- [confirms] TheElec (KO, news, published 2023-01-01) https://www.thelec.kr/news/articleView.html?idxno=19087: "Atom-scale machining produces EUV reflective mirrors."

### R&D·광학 엔지니어 (비공개) (mid)
- note: EUV/High-NA optics R&D staff (undisclosed).
- [confirms] Korea Economic Daily (KO, news, published 2022-07-31) https://www.hankyung.com/article/2022073164931: "2000+ EUV patents from math/physics-based optics R&D."

Reverse side: https://valuechain.wiki/carl-zeiss-smt/customers.md · Ripple: https://valuechain.wiki/carl-zeiss-smt/ripple.md

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Full node: https://valuechain.wiki/carl-zeiss-smt.md · JSON: https://valuechain.wiki/carl-zeiss-smt.json