防疫期间，北京市民马先生喜欢上了网购。他最近收到一箱安徽砀山酥梨后，发现包装上有一个写有“区块链溯源”的二维码，用手机一扫，这箱梨的销售电商名称、正宗原产地位置、产品特色、所属的品质联盟等“身份”信息一目了然，甚至连扫码次数都被清晰地显示出来。马先生说：“看到这么详细、精确的产品信息，我对产品质量更有信心了。”- l/ {- Z: \9 u4 D3 l% `, V
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发表于 2020-11-23 08:54:11