90015000 under HS Code OPTICAL FIBRES AND OPTICAL FIBRE BUNDLES; OPTICAL FIBRE CABLES OTHER THAN THOSE OF HEADING 8544; SHEETS AND PLATES OF POLARISING MATERIAL; LENSES (INCLUDING CONTACT LENSES), PRISMS, MIRRORS AND OTHER OPTICAL ELEMENTS, OF ANY MATERIAL, UNMOUNTED, OTHER THAN SUCH ELEMENTS OF GLASS NOT OPTICALLY WORKED SPECTACLE LENSES OF OTHER MATERIALS, 84799040 under HS Code MACHINES AND MECHANICAL APPLIANCES HAVING INDIVIDUAL FUNCTIONS, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER - PARTS: OF MACHINERY USED FOR MANUFACTURE OF CHEMICALS AND PHARMACEUTICALS, and 48171000 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. were the top exported HS Codes by OPTODEV INC in 2024.