It is the substitution of Freon for blowing agents. Due to high quality, low sulphur, not contain alkene and aromatic hydrocarbon, it is used as the plastics foaming agent (different vesicant grade) or as high efficient froth additive of expansible polystyrene. It can meet the needs of industrial solvent, extract reagent and raw chemical material. Also Used as desorbing agent of the molecular sieve (dewaxing technology). www.phchem.com