In my opinion, there are three forms for express. One: From initially just monochrome single-joint text, white with numbers, only a single record write capabilities;

      Two: multicolor multipart barcode type to have uniform size, control the surrounding automation equipment (data networking, users of the single automation equipment, grassroots acquiring, sorting, quick to send a single data) using NCR paper aspect, and a scan paste function.
       Three: smaller, more convenient multifunction carrier three stickers, multicolor, advertising soft, two-dimensional codes, optional shape and size of the paste-like and kinds of objects.
       Number cost too much, development of electronic business advertising needs, simplify grassroots operation, extended to the end customer stickiness time, manufacturers need to wait for efficiency. The five development needs, so the courier industry, electricity supplier industry, the printing industry are moving toward a more powerful new delivery orders ---- three stickers.
       For example, EMS, Jingdong, Dangdang, these are walking in the forefront of the times with three stickers companies have gradually replace traditional delivery orders.