391722000000 under HS Code TUBES, PIPES AND HOSES, AND FITTINGS THEREFOR (FOR EXAMPLE, JOINTS, ELBOWS, FLANGES), OF PLASTICS - TUBES, PIPES AND HOSES, RIGID: OF POLYMERS OF PROPYLENE, 481710000000 under HS Code ENVELOPES, LETTER CARDS, PLAIN POSTCARDS AND CORRESPONDENCE CARDS, OF PAPER OR PAPERBOARD; BOXES, POUCHES, WALLETS AND WRITING COMPENDIUMS, OF PAPER OR PAPERBOARD, CONTAINING AN ASSORTMENT OF PAPER STATIONERY - ENVELOPES, and 392690900000 under HS Code Others were the top imported HS Codes by ECONOMIC AND SOCIAL RESEARCH FOUNDATION in 2023.