39174000 under HS Code TUBES, PIPES AND HOSES, AND FITTINGS THEREFOR (FOR EXAMPLE, JOINTS, ELBOWS, FLANGES), OF PLASTICS - FITTINGS, 32081010 under HS Code PAINTS AND VARNISHES (INCLUDING ENAMELS AND LACQUERS) BASED ON SYNTHETIC POLYMERS OR CHEMICALLY MODIFIED NATURAL POLYMERS, DISPERSED OR DISSOLVED IN A NON - AQUEOUS MEDIUM; SOLUTIONS AS DEFINED IN NOTE 4 TO THIS CHAPTER - BASED ON POLYESTERS : ENAMELS, and 85381090 under HS Code PARTS SUITABLE FOR USE SOLELY OR PRINCIPALLY WITH THE APPARATUS OF HEADINGS 8535, 8536 OR 8537 -BOARDS, PANELS, CONSOLES, DESKS, CABINETS AND OTHER BASES FOR THE GOODS OF HEADING 8537, NOT EQUIPPED WITH THEIR APPARATUS: OTHER. were the top exported HS Codes by UNITED BUILDER in 2023.