Hangzhou Oxygen Plant Group Co., Ltd. (002430.SZ) designs, manufactures, and sells industrial gas equipment and related products. The company produces air separation plants, liquefied natural gas (LNG) equipment, photovoltaic cell manufacturing equipment, and semiconductor gas purification systems; it also provides engineering services for gas projects, maintenance services, and industrial gas supply solutions. Founded in 1958 and headquartered in Hangzhou, China, the company operates primarily in the People's Republic of China with export activities to international markets including Southeast Asia and Europe. Subsidiaries include Hangzhou Hangyang Cryogenic Equipment Co., Ltd. and Hangzhou Chuangyi Cryogenic Technology Co., Ltd., focusing on specialized cryogenic technologies. In recent developments, the company expanded its LNG equipment production capacity through a strategic partnership with a major energy firm in 2024 and launched advanced photovoltaic silicon reduction furnaces to support the renewable energy sector.