You are viewing a single comment's thread from:RE: 重磅区块链革命，史上首部区块链技术防伪书籍应用成功！View the full contextView the direct parentinchain (25)in #inchain • 8 years ago 谢谢提醒哦，小印会更加努力的！现在我们有免费送书活动，欢迎参与哦！