73079990 under HS Code TUBE OR PIPE FITTINGS (FOR EXAMPLE, COUPLINGS, ELBOWS, SLEEVES), OF IRON OR STEEL - OTHER : OTHER : OTHER, 73045990 under HS Code Others, and 40169390 under HS Code OTHER ARTICLES OF VULCANISED RUBBER OTHER THAN HARD RUBBER - OTHER : GASKETS, WASHERS AND OTHER SEALS : OTHER were the top imported HS Codes by A DONG IMPORT EXPORT AND SERVICES COMPANY LIMITED in 2021.