271019990011 under HS Code Others, 271019990098 under HS Code Others, and 381121001000 under HS Code ANTI-KNOCK PREPARATIONS, OXIDATION INHIBITORS, GUM INHIBITORS, VISCOSITY IMPROVERS, ANTI-CORROSIVE PREPARATIONS AND OTHER PREPARED ADDITIVES, FOR MINERAL OILS (INCLUDING GASOLINE) OR FOR OTHER LIQUIDS USED FOR THE SAME PURPOSES AS MINERAL OILS ADDITIVES FOR LUBRICATING OILS: CONTAINING PETROLEUM OILS OR OILS OBTAINED FROM BITUMINOUS MINERALS were the top imported HS Codes by XENOL ENERJI SANAYI VE TICARET ANONIM SIRKETI in 2021.