Semiconductor materials (EUV photoresist, CMP slurry)
Dongjin Semichem
A semiconductor-materials maker and Korea’s only domestic EUV photoresist producer. FY2025 revenue about ₩1.19T (electronic materials ₩961B). Supplies photoresist, etchant and CMP slurry to Samsung (3nm/DRAM) and SK hynix (HBM CMP slurry).
005290.KQ Updated Jun 21, 2026 1 AI consumers
Dongjin SemichemFY2025 revenue about ₩1.19T
▸ Money out화학 원료·단량체 (비공개)○정제·포장 설비 (비공개)○
Financials & Segments
- Total revenue · FY2025 revenue about ₩1.19T (electronic materials ₩961B)
- Customer concentration · Korea’s only EUV PR maker. Customers: Samsung, SK hynix, LG Display.
- Segments · Electronic materials · Fine chemicals
Revenue from
- Samsung Electronics High confidence· Revenue share 59 · 2025 3Q · Samsung’s share of Dongjin Semichem revenue
Supplies photoresist (incl. EUV) and chemicals to Samsung — ~59% of revenue (Q3 2025); pioneered domestic EUV PR.Confirms KO DART (Korea FSS) Published Mar 20, 2026: "FY2025 revenue about ₩1.19T (electronic materials ₩961B)."Confirms KO Korea Economic TV Published Dec 2, 2025: "Samsung share rose from ~20% (2019) to 59% (Q3 2025)."Confirms EN ETNews Published Dec 20, 2021: "EUV PR co-developed with Samsung passed reliability tests, localizing supply."Confirms KO THE ELEC Accessed Jun 20, 2026: "Dongjin mass-produces EUV negative PR and supplies Samsung." - SK hynix Medium confidence
Newly supplies CMP slurry for SK hynix HBM (breaking a prior single-supplier structure). - 디스플레이·기타 (LG디스플레이 등) Medium confidence
Supplies display materials and fine chemicals.Mentions KO DART (Korea FSS) Published Mar 20, 2026: "Fine chemicals and display materials beyond electronic materials."
Pays to
- 화학 원료·단량체 (비공개) Low confidence
Buys chemical feedstocks and monomers for PR/etchant (suppliers undisclosed). - 정제·포장 설비 (비공개) Low confidence
Buys purification and packaging equipment/materials (undisclosed).
Value-chain ripple (tiers 2–3)
Following node-to-node links up to 3 tiers; each firm is shown once, at its nearest tier.