Multistack International Limited is engaged in the marketing of industrial air conditioning equipment, primarily in Australia, and distribution of Multistack water-cooled and air-cooled water chillers. It is also focused on marketing and distribution of Organic Rankine Cycle (ORC) technologies and products, and distribution of heat exchangers. Its primary business and geographical segment being the heating, ventilation and air conditioning (HVAC) industry throughout Australia. Its operations comprise the sale and service of Multistack water- and air-cooled water chillers used in commercial air-conditioning and process cooling applications. The Company offers its products under various categories, such as Oil-Free Chillers, VSD Screw Chillers, Scroll Chillers, Screw Chillers, and ORCs & Turbo Expanders. Oil-Free Chillers include MTW-F Series, MTA-F Series, MTW-MF Series, MTW-M Series, MS-F Series and MS80T. VSD Screw Chillers includes MVSA Series and MVSW Series.