With the express delivery becoming more and more convenient, many cartons are often used, and many cartons are also used in daily life. The manufacturer I have been cooperating with for a long time is Hangcai Packaging, and the quality of cartons is quite good. The factory address is No.3 Liuwei Road, Continental Industrial Park, Liangzhu Street, Yuhang District, Hangzhou. Alibaba store web page link