Haohua Chemical Science & Technology Corp. Ltd. engages in the research, development, and application of pressure swing adsorption (PSA) technologies. It includes catalysts, PSA technology, equipment, research, production, and sales of synthetic linalool and industrial gases, chemical engineering design, and engineering contracting. Its products include PSA gas separation technologies, one-carbon (C1) chemical technologies, catalysts such as methanol synthesis catalysts and anti-heavy hydrocarbon catalysts, and valves such as cut-off valves and butterfly valves. It also provides related engineering, procurement, and construction (EPC) services. The company was founded on August 3, 1999 and is headquartered in Beijing, China.