DIG Airgas

DIG Airgas is a South Korean manufacturer of industrial gases and related equipment for the electronics and petroleum chemical industries. Founded in 1979 as Daesung Industrial Gases, the company provides a range of products including liquid oxygen, nitrogen, hydrogen, and liquefied carbon dioxide, alongside gas generation systems and purifying facilities.

The company holds a significant position in the South Korean market as the third-largest industrial gas supplier. Its client base includes major players in the semiconductor sector, such as Samsung Electronics and SK Hynix, as well as companies in the display, solar cell, and LED industries. The business operates through a network of approximately 60 plants and 220 kilometers of pipelines across major industrial basins in South Korea.

DIG Airgas has undergone several ownership changes. Originally a joint venture with Air Liquide, it was later acquired by private equity firm MBK Partners in 2017. In 2019, Macquarie Asset Management purchased the company for 2.5 trillion won. In a significant market event, French industrial gas giant Air Liquide signed an agreement in August 2025 to re-acquire DIG Airgas from Macquarie for an enterprise value of 2.85 billion euros. This transaction marks Air Liquide's return to the Korean industrial gas market after a decade.

Keywords: industrial gas supplier, specialty gases, South Korea, nitrogen, oxygen, hydrogen, electronics manufacturing, semiconductor industry, petrochemical sector, gas generation systems, liquid gas, gas purification, Daesung Industrial Gases, Air Liquide, Macquarie Asset Management, Samsung Electronics client, SK Hynix supplier, industrial chemicals