Air Liquide is a century-old legal enterprise, Air Liquide Group, which returned to China after the reform and opening up, and has been developing for nearly 30 years. At present, the gas market in China is mainly occupied by several foreign gas companies, and liquefied air is one of them.

Air Liquide has many brands. For example, Nexelia industrial production gas series covers all-round solutions such as food processing, water treatment, automobile manufacturing and electronic manufacturing. There are also brands that supply medical devices, medical services, professional medical disinfectants and special medical chemicals, such as Tianma.