Blupura Srl says that hydrocarbon (HC) natural gases are one of the most climate-?friendly and cost efficient refrigerants to heat, cool and freeze. Within the Greenpeace report, the first page explains what natural refrigerant gasses are, and their application in the market. The biggest markets for HCs are domestic refrigerators and freezers. Isobutane is used in 100% of all new home fridges in Germany, and in 50% of all new Chinese models. HC refrigerators are also sold in Western Europe, Argentina, Australia, Brazil, Cuba, India, Indonesia, Japan, Pakistan and Russia. {pagebreak} Overall