28321000 under HS Code Others, 29181400 under HS Code CARBOXYLIC ACIDS WITH ADDITIONAL OXYGEN FUNCTION AND THEIR ANHYDRIDES, HALIDES, PEROXIDES AND PEROXYACIDS; THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES - CARBOXYLIC ACIDS WITH ALCOHOL FUNCTION, BUT WITHOUT OTHER OXYGEN FUNCTION, THEIR ANHYDRIDES, HALIDES, PEROXIDES, PEROXYACIDS AND THEIR DERIVATIVES : CITRIC ACID, and 39079990 under HS Code POLYACETALS, OTHER POLYETHERS AND EPOXIDE RESINS, IN PRIMARY FORMS; POLYCARBONATES, ALKYD RESINS, POLYALLYLESTERS AND OTHER POLYESTERS, IN PRIMARY FORMS - OTHER POLYESTERS : OTHER :OTHER were the top imported HS Codes by IDEAL CHEMICAL in 2021.