Song Dynasty Guanjiao 2013 is a vintage wine produced by Song Dynasty Guanjiao Liquor Company. It is an electronic warehouse receipt generated by blockchain technology, that is, an electronic bill of lading. Every 500ml is the minimum unit of a warehouse receipt. Buyers are free to transfer, and can also freely withdraw the spot. On November 11, 2018, the issuance application passed the on-site inventory review by the notary office, lawyers, and auditors, and met the conditions for issuance in digital warehouse receipts (spot bills of lading). The total is 1000 tons. A total of 2.16 million SDGJ2013.