Harmonized Commodity Description and Coding System, tseem hu ua Harmonized System of tariff nomenclature yog ib qho txheej txheem thoob ntiaj teb ntawm cov npe thiab cov lej los faib cov khoom lag luam.Nws tau pib siv rau xyoo 1988 thiab txij li ntawd tau tsim thiab mai ...
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