“…The sectors for EPC application are also quite different. In many developed countries, such as USA, Japan, Canada, UK, Finland, and Australia, EPC is mainly adopted for building energy-efficiency retrofits (see: [2,7,[21][22][23][24]). However, in some developing countries, such as China, EPC is primarily applied in coal, iron and steel [4], paper-making [25], and building sectors [26].…”