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In order to reduce the coke yield and increase the economic benefits of FCC unit under the prerequisites of securing the olefin content of gasoline in compliance with the requirement, SINOPEC Luoyang Branch Company applied in the period from July through October 2004 the new generation X-62 catalyst (FlexTec-LOL1) developed by the Engelhard Corporation of USA to improve the heavy oil conversion and to reduce coke make. The result of tests has shown that indicators on reducing the unit catalyst consumption,amplitude on reduction of non-ideal products (coke+oil slurry+dry gas) yield, and amplitude on reduction of coke yield were comparatively satisfactory.