Air Liquide signed a binding agreement to acquire DIG Airgas from Macquarie Asia-Pacific Infrastructure Fund 2 at an enterprise value of EUR 2.85 billion (KRW 4.6 trillion). Closing is expected in the first half of 2026.

Linde signed an investment memorandum with Gyeonggi Province for about KRW 150 billion to build an industrial gas plant in Pyeongtaek producing semiconductor rare gases such as krypton and xenon, to be completed by 2031.

Boeun County signed a 12 billion won expansion investment agreement with Puremann, which will buy land and build a second factory in the Jangan industrial complex to enter the new materials business. Puremann currently makes automotive and refrigeration refrigerants.

Entegris Korea signed an agreement with Gyeonggi Province for an additional $20 million investment, reinvesting profits from Korea. It began building a production facility in Hwaseong Jangan 2 industrial complex that will make high-purity chemicals and special containers, and will hire 50 people.

Air Products Korea signed an MOU with Chungcheongnam-do province to invest $30 million over five years in building industrial gas production and storage facilities at its Cheonan foreign investment zone plant.

Lotte BP Chemical confirmed an 180 billion won expansion at its Ulsan plant to build acetic acid and vinyl acetate monomer capacity, with construction from January 2019 to September 2020 and commercial production from January 2021. The project is expected to create 50 direct jobs.

Kumho P&B Chemicals will invest 200 billion won to add 200,000 tonnes per year of BPA capacity at a new site near its Yeosu plant, raising capacity from 450,000 to 650,000 tonnes. Completion is due in the second half of 2021.

Air Products has been awarded additional gaseous nitrogen and hydrogen supply for Samsung Electronics' Giheung fab in South Korea. It will build a new air separation unit, several hydrogen plants and pipelines, scheduled to be operational in 2020.

Wonik Materials decided to invest KRW 21.5 billion in building a factory and new facilities, as disclosed on 5 April 2018.

South Korean specialty chemicals maker SONGWON Industrial Group announced it is investing in new production capacity for antioxidants used in fuels and lubricants, alongside R&D.