China Gas Industry Investment Holdings Co. Ltd. is an investment holding company principally engaged in the production and supply of industrial gases in the People's Republic of China. The company offers pipeline industrial gases including oxygen, nitrogen and argon produced by air separation units, as well as liquefied industrial gases supplied primarily to offsite independent end-user customers; hydrogen and carbon dioxide in smaller amounts; liquefied natural gas products; and gas transmission services including coke oven gas pressurisation and transmission. It operates through three main segments comprising supply of industrial gas, liquefied natural gas and gas transmission service, and technical support and management services, with a primary focus on the iron and steel industry in the Jing-Jin-Ji region including Tangshan and Hebei Province; it also runs an automobile LNG filling station. Founded in 2004 and headquartered at No. 12 Yantai Road, Laoting Economic Development Zone, Tangshan, Hebei Province, the company generates the majority of its revenue from industrial gas supply and maintains long-standing exclusive supplier relationships with major steel producers such as HBIS Group. In November 2025, the company announced the renewal of continuing connected transactions with HBIS Group affiliates for gas products, related services and utilities procurement through 2028, incorporating an estimated 10% annual volume increase from 2027 to reflect rising demand and production capacity at its Tangshan High-strength Gas Plant. The company listed on the Hong Kong Stock Exchange in December 2020 and employs approximately 315 to 324 people with operations centered in China.