The Harmonized Commodity Description and Coding System (HS) of tariff nomenclature is an internationally standardized system of names and numbers for classifying traded products. More than 200 countries, customs and economic unions, representing more than 98% of world trade, use the HS as a basis for customs tariffs.
Different HS codes means different import customs tariffs. Digital photo frame importers need to know that the Harmonized Code(HS code) is related with LCD aspect ratio of the digital photo frames to buy. That's to say, different digital photo frames have different customs tariff --the duty tax, if only the LCD aspect ratio is not the same.