Product description: the shelf has three layers, each layer contains three kinds of goods£¬£¬£¬
£¬£¬£¬each layer has an LCD display electronic tags showing prices, equipped with electronic gravity sensor and camera,combined with  gravity sensing unit weighing and cameras, it can intelligently identify the type and amount of goods that users take off the shelves, automatically add items to the cart at the checkout screen.  The customer will settle accounts after the goods are collected, displaying the alipay and WeChat qr codes generated by the order amount. Users scan the qr code to pay and then pick up the goods by themselves after the payment is completed.