# Who does SFA Semicon pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/sfa-semicon · Facet: suppliers · Updated: 2026-07-12T06:24:41.582139+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: SFA Semicon's confirmed suppliers/cost counterparties include Advantest plus 1 undisclosed/aggregate relationship. Per the valuechain.wiki graph: 2 cost edges, backed by 2 dated sources, 0 of them primary filings (as of 2026-07-12).

### 본딩·소재 (비공개) (low)
- note: Materials and R&D (undisclosed).
- [confirms] SFA Semicon (EN, ir, published 2025-05-01) https://www.sfas.co.kr/eng/: "Materials and R&D (undisclosed)."

### Advantest (low)  → /advantest.md
- note: Sources test equipment from Advantest — back-end capacity expansion means tester procurement, so equipment lead time is the upstream bottleneck to scaling volume.
- [confirms] Daum News (KO, news, published 2026-06-17) https://v.daum.net/v/20260617203416105: "Buys test equipment from Advantest."
- [confirms] SFA Semicon (EN, ir, published 2025-05-01) https://www.sfas.co.kr/eng/: "Buys test equipment from Advantest."

Reverse side: https://valuechain.wiki/sfa-semicon/customers.md · Ripple: https://valuechain.wiki/sfa-semicon/ripple.md

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Full node: https://valuechain.wiki/sfa-semicon.md · JSON: https://valuechain.wiki/sfa-semicon.json