Tokuyama Corp. (Tokyo) announced that Hantok Chemicals Co., Ltd. , an equity-method affiliate of Tokuyama, held a groundbreaking ceremony in Pyeongtaek, Republic of Korea, for its new Pyeongtaek Plant, which will be a production facility for tetramethylammonium hydroxide (TMAH), a photoresist developer. Commercial operations are scheduled to commence in September 2027.
Hantok is a joint venture (JV) between Tokuyama and LOTTE Chemical Co., Ltd. and has manufactured and sold photoresist developer in Ulsan, Republic of Korea, since 1995. With demand for advanced semiconductors continuing to grow, demand for TMAH used in semiconductor manufacturing processes is also expected to increase further. Hantok aims to increase its current TMAH production capacity by 50% in the future. This expansion will reinforce its stable supply structure for customers and further strengthen its presence in the global market.