Founded in 1973, Twin City Fan & Blower is a manufacturer of centrifugal fans for air and material handling. The company's clients include industrial and commercial markets as well as to OEMs. It has been providing fans for industries, including automotive, paper mills, textile, air pollution control, commercial buildings and heating, ventilation and air conditioning (HVAC). The products of the company are sold under the trade names Aerovent, Clarage, Twin City Fan & Blower, and Azen Manufacturing Pte., Ltd. The company owns 600,000 square feet of office and manufacturing facilities and it has more then six plants to manufacture its products.