# Who does LG Chem pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/lg-chem · Facet: suppliers · Updated: 2026-09-24T12:56:02.112002+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: LG Chem's confirmed suppliers/cost counterparties include 코스모신소재 plus 3 undisclosed/aggregate relationships. Per the valuechain.wiki graph: 4 cost edges, backed by 2 dated sources, 2 of them primary filings (as of 2026-09-24).

### GS칼텍스 (납사) (high)
- metric: Amount ₩11.1T · 석유화학 원재료 매입(연결)
- note: Key domestic supplier of naphtha/EDC, the main petrochemical feedstock (₩11.09T purchases, 47.6% of materials in FY2025).
- [confirms] DART (FSS) (KO, filing, published 2026-03-13) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260313001195: "Petrochemical feedstock naphtha/EDC purchases of ₩11,086,803 million (47.6% of materials); suppliers GS Caltex, Mitsui, etc.; domestic naphtha at ₩848,660/ton sourced mainly from GS Caltex."

### 화유코발트 Huayou (전구체·리튬) (high)
- metric: Amount ₩1.5T · 첨단소재 원재료 매입(연결)
- note: Key supplier of precursor and lithium for advanced-materials cathodes (₩1.47T purchases, 6.3% of materials in FY2025).
- [confirms] DART (FSS) (KO, filing, published 2026-03-13) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260313001195: "Advanced-materials feedstock precursor/lithium for cathodes: purchases of ₩1,466,703 million (6.3%); supplier Huayou, etc."

### 코스모신소재 (high)  → /cosmo-advanced-materials-technology.md
- metric: Contract value ₩250.4B · cathode purchase contract
- note: Buys high-nickel NCM cathode active material from Cosmo AM&T. 2025 single-supply contract worth 250.4 billion won.
- [confirms] FSS DART (KO, filing, published 2026-06-02) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260602000342: "LG Chem is among Cosmo AM&T's main cathode customers (cathode revenue 327.6 billion won)."

### LG에너지솔루션 (배터리 자회사 지분) (high)  → /lg-energy-solution.md
- metric: Market share 51.5% · LGES가 LG화학 연결매출에서 차지하는 비중
- note: Listed subsidiary spun off from the battery division on Dec 1, 2020; ~₩23.7T revenue in 2025, 51.5% of LG Chem's consolidated top line.
- [confirms] DART (FSS) (KO, filing, published 2026-03-13) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260313001195: "The battery division was spun off on Dec 1, 2020 into subsidiary LG Energy Solution, which posted about ₩23.67 trillion in 2025 consolidated revenue."

### NICHIA (전지 원재료) (mid)
- metric: Amount ₩9.8T · LGES 전지 원재료 매입(연결)
- note: Key supplier of battery materials (cathode/anode/separator) for subsidiary LG Energy Solution (₩9.81T purchases, 42.1% in FY2025).
- [confirms] DART (FSS) (KO, filing, published 2026-03-13) https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260313001195: "LG Energy Solution battery feedstock (cathode/anode/separator): purchases of ₩9,814,535 million (42.1%); supplier NICHIA, etc."

Reverse side: https://valuechain.wiki/lg-chem/customers.md · Ripple: https://valuechain.wiki/lg-chem/ripple.md

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