The 20000 t / a ultra-low aromatic solvent oil unit of Taiwan Hetong Chemical Co., Ltd. is the first set of ultra-low aromatic solvent oil unit developed by our company. It is also the first solvent oil unit in China to reduce the aromatic content of solvent oil to less than 50ppm. Since the unit has been running for four years, the aromatics have been in the range of 20-30ppm. The products are exported to Singapore, Europe and other international markets, which are very popular with users.