Broad Group is a private manufacturer of central air conditioning non-electric absorption chillers that are powered by natural gas and waste heat based in Changsha, China. It is also the parent company of Broad Sustainable Building, a prefab building company. The company was established in 1996 and exports products to over 60 countries. It was Shanghai Expo 2010's only global official partner that was a Chinese private enterprise and the exclusive supplier of central air conditioning, ventilation and air purification products for the event.