The UN Comtrade database is the largest depository of international trade data. It contains well over 3 billion data records since 1962 and is available publicly on the internet. In addition, it offers public and premium data API for easier integration/download.
Refer to this link on how to fully use UN Comtrade: https://unstats.un.org/unsd/tradekb/Knowledgebase/Comtrade-User-Guide?Keywords=user
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