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Commodity barcodes consist of a series of digital symbols,歌曲问情波洛茨克 usually printed on the outer packaging of retail commodities, and can be regarded as the "ID card" and "passport" of the commodity. Xia Zhenguo said: "Through the use of commodity barcodes, the information on commodity elements that need to be declared is unified into a standard state, and the barcode information of enterprise goods is included in the basic customs database, which can break the data barriers between regulatory authorities and enterprises, reduce the cost of corporate compliance management, and improve fine-grained management."