The 20th European Conference on the Latest Technologies in Refrigeration, Air Conditioning and Heat Pumps was held by United Nations Environment Programme (UNEP), International Institute of Refrigeration (IIR), Air conditioning and Refrigeration European Association (AREA), Centro Studi Galileo, etc. on June 8 and 9 at the historic Politecnico di Milano in Milan, Italy’s second-largest city. The conference was attended by over 270 participants, including 50 via the Internet, from 38 countries, such as policymakers, prominent scientists and researchers, and business executives.