Hangzhou Oxygen Plant Group Co., Ltd., together with its subsidiaries, manufactures and sells air separation equipment, cryogenic petrochemical equipment, and various gas products in China and internationally. It operates through three segments: Machinery Manufacturing, Gas Sales, and EPC. The company offers oxygen, nitrogen, argon, neon, helium, krypton, xenon, and carbon dioxide, as well as medical, electronic bulk, electronic specialty, high-purity, standard, and mixed gases. It also provides supporting machine components, including turbo compressors, expanders, adsorbers, plate heat exchangers, and others; and engineering, procurement, and construction services. In addition, the company is involved in hydrogen energy; energy storage; CCUS; nuclear fusion energy; technical services; logistics and transportation; and retail business. It serves metallurgy, chemicals, machinery, semiconductors, aerospace, new energy, new materials, healthcare, food preservation, electronics, nuclear fusion devices, and scientific research industries. The company was founded in 1950 and is headquartered in Hangzhou, China. Hangzhou Oxygen Plant Group Co., Ltd. operates as a subsidiary of Hangzhou Hangyang Holdings Co., Ltd.