29031200 under HS Code HALOGENATED DERIVATIVES OF HYDROCARBONS - SATURATED CHLORINATED DERIVATIVES OF ACYCLIC HYDROCARBONS : DICHLOROMETHANE (METHYLENE CHLORIDE), 29142200 under HS Code KETONES AND QUINONES, WHETHER OR NOT WITH OTHER OXYGEN FUNCTION, AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES - CYCLANIC, CYCLENIC OR CYCLOTERPENIC KETONES WITHOUT OTHER OXYGEN FUNCTION : CYCLOHEXANONE AND METHYL-CYCLOHEXANONES, and 29241990 under HS Code Others were the top imported HS Codes by NAM DUU OIL CHEMICAL COMPANY LIMITED in 2021.