​It adopts the way of splicing three pieces cardboard to assemble a box. And its forming process employs the hot melt glue spraying instead of the paper tape sticking. It not only save the materials, but also makes the end products much solid and beautiful. No tape traces appears on the surface of finished boxes. It has multi glue spray ways, such as the point-spraying, the line-spaying etc. which is carrying out according to the requirements of boxes.