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As of the end of January this year, Guangzhou Petrochemical's 85,000 tons/year dry gas ethylbenzene plant has accumulated stable and efficient operation for more than 9 months. The calibration results under overload conditions indicate that the ethylene conversion of the SEB-08 catalyst is above 99.7%, the ethyl selectivity is above 99.6%, the ethylbenzene product purity is greater than 99.8%, and the catalyst regeneration cycle is expected to exceed one year. The technical indicators meet the production requirements.