# Who does SUMCO Corporation pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/sumco · Facet: suppliers · Updated: 2026-07-12T08:19:54.549585+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: SUMCO Corporation discloses no named confirmed suppliers/cost counterparties; 2 relationships are tracked as undisclosed/aggregate. Per the valuechain.wiki graph: 2 cost edges, backed by 1 dated sources, 0 of them primary filings (as of 2026-07-12).

### 결정성장·연마 장비 (비공개) (low)
- note: Crystal pullers and polishing/cleaning equipment (undisclosed).
- [mentions] SUMCO (EN, ir, published 2025-05-01) https://www.sumcosi.com/english/ir/: "IR: capex."

### 폴리실리콘·석영 도가니·에너지 (비공개) (low)
- note: Polysilicon, quartz crucibles and energy for crystal growth (suppliers undisclosed).
- [mentions] SUMCO (EN, ir, published 2025-05-01) https://www.sumcosi.com/english/ir/: "IR: raw-material and energy costs."

Reverse side: https://valuechain.wiki/sumco/customers.md · Ripple: https://valuechain.wiki/sumco/ripple.md

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