Polaris employees push QR code expiration date.

10 days Polaris Technology Development Co., Ltd. was established on March 9, 20021,located in Jianguo Road, Chaoyang District, Beijing. Company employees only push the QR code for ten days, because customers can scan the QR code 10 days. Two-dimensional code is also called two-dimensional bar code, and the common two-dimensional code is QRCode, which is a coding method.