The complex refinement of light resins from pyro-condensates that are produced by the EP-300 technology has been studied using rectification and freezing method. High purity benzene (of  98.5%) and increased contents of  benzene and toluene in pyro-condensate have  been reached over catalyst on the basis of  AlCl₃  together with toluene component. Valuable product – oil-polymer  resin – has been obtained  as well.