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並前往https://content.dgft.gov.in/Website/dgftprod/7d5fd1eb-ad39-4c99-b760-014223657469/Eng-Notification%2054%20dated%209%20Feb%202022%20ITC(HS)%202022%20_with%20Annexures.pdf

Notification - DGFT

2. Import of drone components shall be 'Free'. ... hexafluoro-2-butene. (HFO1336mzz) ... in the structure : -- Alfentanil.

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