Hantok Chemicals Co., Ltd. (한덕화학주식회사), headquartered in Seoul, South Korea, is a specialty chemicals manufacturer established in 1995 as a joint venture between Lotte Chemical and Japan's Tokuyama Corporation.
The company specializes in high-purity chemicals for semiconductor and display manufacturing, primarily producing tetramethylammonium hydroxide (TMAH), a key photoresist developer used in wafer processing steps such as development, etching, and cleaning. Hantok holds approximately 35% of the global TMAH market share, positioning it as the leading supplier to semiconductor producers.
Recent expansions include a new TMAH production facility in Pyeongtaek, Gyeonggi Province, spanning about 9,800 pyeong, with full operations planned by late 2026 to meet demand from semiconductor mega clusters and support high-value materials growth.
Also known as HANTOK CHEMICALS CO., LTD..
chemXplore tracks 1 project involving Hantok, of which one is active.
Hantok's role on them: Owner.
1 new construction.
Contractors are recorded on this project For subscribers
Targeting: Tetramethylammonium hydroxide (1)
New tetramethylammonium hydroxide plant will double capacity for photoresist developer supply; completion scheduled FY2027; groundbreaking June 19 in Pyeongtaek.
KRW 130 billion investment for a new TMAH plant on a 32,216 m² Poseung site to create a second production base and improve supply stability and logistics for semiconductor developers.
Targets >60% specialty by 2030; building a 500k t/yr compounding plant; creating hydrogen value chain—four fuel-cell plants (80MW) and 450‑bar H2 hub; expanding high-end copper foil and TMAH output.
