Acma Ltd., an investment holding company based in Singapore and established in... Acma Ltd., an investment holding company based in Singapore and established in 1965, primarily focuses on the global distribution of air conditioning and ventilation systems, serving markets across Singapore, Europe, Asia, and North America. The company operates through two main segments: Investment, and Communications, Electronics and Equipment Distribution. Beyond its core HVAC operations, Acma Ltd. also provides sale, maintenance, and rental services for various equipment, including communication and computer hardware, peripherals, and other office and industrial machinery. Additionally, it supplies microwave telecommunications systems and a range of electronic and computer-related products. The company operated as China Auto Corporation Ltd. until April 2013, when it was renamed Acma Ltd.