# Who does Samsung Heavy Industries pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/samsung-heavy-industries · Facet: suppliers · Updated: 2026-07-12T04:00:25.026+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Samsung Heavy Industries's confirmed suppliers/cost counterparties include POSCO (강재·후판), 한화엔진 (선박용 메인엔진) plus 1 undisclosed/aggregate relationship. Per the valuechain.wiki graph: 3 cost edges, backed by 1 dated sources, 1 of them primary filings (as of 2026-07-12).

### POSCO (강재·후판) (high)  → /posco-holdings.md
- note: Per the annual report, key raw materials are steel plate, piles, sections and propellers; POSCO is named as a principal supplier. Plate prices track iron ore and coking coal. A 5% rise in total contract cost cuts pretax profit by KRW 911bn (disclosed sensitivity).
- [confirms] FSS DART (KO, filing, published 2026-03-12) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260312001037: "Key raw materials incl. steel, engines, sections, propellers; principal suppliers POSCO, Hanwha Engine, Korea Carbon. A 5% cost rise cuts pretax profit by KRW 911bn."

### 한화엔진 (선박용 메인엔진) (high)  → /hanwha-engine.md
- note: Hanwha Engine is named in the annual report as a principal supplier of marine main engines (propulsion).
- [confirms] FSS DART (KO, filing, published 2026-03-12) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260312001037: "Hanwha Engine named as a principal supplier (main engines)."

### 한국카본 (LNG 화물창 보냉재) (mid)
- note: Korea Carbon is named in the annual report as a principal supplier of LNG cargo-tank insulation.
- [confirms] FSS DART (KO, filing, published 2026-03-12) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260312001037: "Korea Carbon named as a principal supplier."

Reverse side: https://valuechain.wiki/samsung-heavy-industries/customers.md · Ripple: https://valuechain.wiki/samsung-heavy-industries/ripple.md

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