Orange Technology, together with Green Technology, forms the double helical structure of sustainable human development. Instead of emphasizing the relations between environments and humans, as proposed by green technology, the orange technology aims to discover the relationship between human development and happiness, and bring more health, happiness, warming care, and more mental wellness to the society. The research scope includes computer science, electrical engineering, biomedical engineering, psychological/physiological science, cognitive science, social science, and dechnology (design + technology). The 2015 International Conference on Orange Technologies (ICOT2015) will be held in Hong Kong, known as the pearl of the orient, from 19 - 22 December 2015. ICOT2015 will provide an interactive forum for researchers, engineers and vendors from different disciplines to exchange ideas and experiences, identify future directions and challenges, as well as promote developments and applications of orange technology. This conference will significantly benefit a large variety of audience from both academic and industry. You are cordially invited and most welcome to participate in ICOT2015.