28321000 under HS Code Others, 29141200 under HS Code KETONES AND QUINONES, WHETHER OR NOT WITH OTHER OXYGEN FUNCTION, AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES - ACYCLIC KETONES WITHOUT OTHER OXYGEN FUNCTION : BUTANONE (METHYL ETHYL KETONE), and 29141300 under HS Code KETONES AND QUINONES, WHETHER OR NOT WITH OTHER OXYGEN FUNCTION, AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES - ACYCLIC KETONES WITHOUT OTHER OXYGEN FUNCTION : 4-METHYLPENTAN-2-ONE (METHYL ISOBUTYL KETONE). were the top exported HS Codes by A CHAU IMPORT EXPORT CHEMICALS AND TECHNOLOGY COMPANY LIMITED in 2021.