{"slug":"foosung","name":"후성","name_en":"Foosung","ticker":"093370.KS","updated_at":"2026-06-20T16:18:30.936716+00:00","canonical":"https://valuechain.wiki/foosung","kicker":"반도체 특수가스 (C4F6·WF6)","kicker_en":"Semiconductor specialty gases (C4F6, WF6)","lead":"국내 유일의 반도체 특수가스(에칭용 C4F6·텅스텐 배선용 WF6) 제조사. FY2025 매출 4,716억원. 삼성전자·SK하이닉스에 공급하며, 3D 낸드 고단화로 WF6 수요가 급증한다. 이차전지 전해질(LiPF6)로 사업 다각화.","lead_en":"Korea’s only maker of semiconductor specialty gases (C4F6 for etch, WF6 for tungsten interconnect). FY2025 revenue ₩472B. Supplies Samsung and SK hynix; WF6 demand surges with high-stack 3D NAND. Diversifying into battery electrolyte (LiPF6).","segments":{"fy":2025,"parts":[{"desc":"C4F6(에칭)·WF6(텅스텐 배선)","name":"반도체 특수가스"},{"desc":"전해질(LiPF6)","name":"이차전지 소재"},{"desc":"기타","name":"냉매·무기불소"}],"total":"FY2025 매출 ₩4,716억","source":"https://dart.fss.or.kr/dsae001/selectPopup.do?selectKey=00595191","concentration":"국내 유일 C4F6·WF6 제조. 고객 삼성전자·SK하이닉스."},"segments_en":{"parts":[{"desc":"C4F6 (etch), WF6 (tungsten interconnect)","name":"Semiconductor gases"},{"desc":"Electrolyte (LiPF6)","name":"Battery materials"},{"desc":"Other","name":"Refrigerants & fluorides"}],"total":"FY2025 revenue ₩472B","concentration":"Korea’s only C4F6/WF6 maker. Customers Samsung, SK hynix."},"edges":[{"direction":"revenue","counterparty":"삼성전자","counterparty_slug":"samsung-electronics","confidence":"high","metric":{"type":"revenue","unit":"KRW","basis":"연결 총매출","value":471600000000,"period":"FY2025","basis_en":"consolidated total revenue"},"note":"삼성전자에 에칭용 C4F6·텅스텐 배선용 WF6 등 특수가스 공급(국내 유일 제조).","note_en":"Supplies specialty gases — C4F6 (etch) and WF6 (tungsten interconnect) — to Samsung (Korea’s only maker).","sources":[{"stance":"confirms","publisher":"금융감독원 전자공시(DART)","publisher_en":"DART (Korea FSS)","kind":"filing","lang":"ko","published_at":"2026-03-20","url":"https://dart.fss.or.kr/dsae001/selectPopup.do?selectKey=00595191","title":"후성 사업보고서 (DART, 2025)","title_en":"Foosung annual report (DART, 2025)","excerpt":"FY2025 매출 4,716억원.","excerpt_en":"FY2025 revenue ₩472B."},{"stance":"confirms","publisher":"허프포스트코리아","publisher_en":"HuffPost Korea","kind":"news","lang":"ko","published_at":null,"url":"https://www.huffingtonpost.kr/article/239927","title":"후성, 국내 유일 C4F6·WF6 제조…삼성·SK 고객","title_en":"Foosung, Korea’s only C4F6/WF6 maker, supplies Samsung and SK","excerpt":"후성이 국내 유일 C4F6·WF6 제조, 삼성·SK 고객.","excerpt_en":"Foosung is Korea’s only C4F6/WF6 maker, supplying Samsung and SK."},{"stance":"confirms","publisher":"Abachy","publisher_en":"Abachy","kind":"reference","lang":"en","published_at":null,"url":"https://abachy.com/catalog/materials/gases/foosung-co-ltd","title":"후성 — 반도체 특수가스(C4F6·WF6)","title_en":"Foosung — semiconductor specialty gases (C4F6, WF6)","excerpt":"후성이 반도체용 C4F6·WF6 특수가스를 공급.","excerpt_en":"Foosung supplies semiconductor C4F6 and WF6 specialty gases."}]},{"direction":"revenue","counterparty":"SK하이닉스","counterparty_slug":"sk-hynix","confidence":"high","metric":null,"note":"SK하이닉스에 C4F6·WF6 특수가스 공급. 3D 낸드 고단화로 WF6 수요 급증.","note_en":"Supplies C4F6/WF6 specialty gases to SK hynix; WF6 demand surges with high-stack 3D NAND.","sources":[{"stance":"confirms","publisher":"허프포스트코리아","publisher_en":"HuffPost Korea","kind":"news","lang":"ko","published_at":null,"url":"https://www.huffingtonpost.kr/article/239927","title":"후성, 국내 유일 C4F6·WF6 제조…삼성·SK 고객","title_en":"Foosung, Korea’s only C4F6/WF6 maker, supplies Samsung and SK","excerpt":"후성이 삼성·SK하이닉스에 특수가스 공급.","excerpt_en":"Foosung supplies specialty gases to Samsung and SK hynix."},{"stance":"confirms","publisher":"투데이에너지","publisher_en":"Today Energy","kind":"news","lang":"ko","published_at":null,"url":"http://www.todayenergy.kr/news/articleView.html?idxno=38459","title":"후성, C4F6 반도체 성능평가 인증","title_en":"Foosung earns semiconductor evaluation certification for C4F6","excerpt":"후성 C4F6가 반도체 성능평가 인증 획득.","excerpt_en":"Foosung’s C4F6 earned semiconductor evaluation certification."}]},{"direction":"revenue","counterparty":"이차전지·기타","counterparty_slug":null,"confidence":"mid","metric":null,"note":"이차전지 전해질(LiPF6)·냉매 등 공급.","note_en":"Supplies battery electrolyte (LiPF6), refrigerants and others.","sources":[{"stance":"mentions","publisher":"금융감독원 전자공시(DART)","publisher_en":"DART (Korea FSS)","kind":"filing","lang":"ko","published_at":"2026-03-20","url":"https://dart.fss.or.kr/dsae001/selectPopup.do?selectKey=00595191","title":"후성 사업보고서 (DART, 2025)","title_en":"Foosung annual report (DART, 2025)","excerpt":"이차전지 소재로 다각화.","excerpt_en":"Diversifying into battery materials."}]},{"direction":"cost","counterparty":"형석·무기불소 원료 (비공개)","counterparty_slug":null,"confidence":"low","metric":{"type":"qualifier","value":null,"qualifier":"confirmed_no_disclosed_value"},"note":"형석 등 무기불소 원료 매입(공급사 비공개).","note_en":"Buys fluorspar and inorganic-fluorine feedstock (suppliers undisclosed).","sources":[{"stance":"mentions","publisher":"금융감독원 전자공시(DART)","publisher_en":"DART (Korea FSS)","kind":"filing","lang":"ko","published_at":"2026-03-20","url":"https://dart.fss.or.kr/dsae001/selectPopup.do?selectKey=00595191","title":"후성 사업보고서 (DART, 2025)","title_en":"Foosung annual report (DART, 2025)","excerpt":"사업보고서: 원재료 매입.","excerpt_en":"Annual report: raw-material purchases."}]},{"direction":"cost","counterparty":"정제·충전 설비 (비공개)","counterparty_slug":null,"confidence":"low","metric":{"type":"qualifier","value":null,"qualifier":"confirmed_no_disclosed_value"},"note":"가스 정제·충전 설비·용기 매입(비공개).","note_en":"Buys gas purification/filling equipment and cylinders (undisclosed).","sources":[{"stance":"mentions","publisher":"금융감독원 전자공시(DART)","publisher_en":"DART (Korea FSS)","kind":"filing","lang":"ko","published_at":"2026-03-20","url":"https://dart.fss.or.kr/dsae001/selectPopup.do?selectKey=00595191","title":"후성 사업보고서 (DART, 2025)","title_en":"Foosung annual report (DART, 2025)","excerpt":"사업보고서: 설비·용기.","excerpt_en":"Annual report: equipment and cylinders."}]}]}