The European Union has issued a directive on environmental protection 2005/69/EC, which requires the full use of aromatic oil and other toxic rubber oils in the production of tire and oil filled rubber since January 1, 2010. Environmental protection aromatic oil is to remove the majority of polycyclic aromatic compounds to meet environmental requirements, the method of solvent refining to obtain two times of extraction of aromatic oil. Environmental protection aromatic oil is the best substitute of aromatic hydrocarbon oil. The company's production of environmentally friendly aromatic oil, the environmental indicators in full compliance with EU environmental directives 2005/69/EC;