Introduction: Sewing machine is a machine that uses one or more sewing threads to form one or more stitches on sewing materials, so that one or more layers of sewing materials are interwoven or sewn together. The sewing machine can sew cotton, linen, silk, wool, man-made fiber and other fabrics and leather, plastic, paper and other products. The sewing stitch is neat, beautiful, flat and firm, with fast sewing speed and simple use. From it, hand embroidery, computer embroidery and other art forms are derived.

Introduction: All-in-one machine can be divided into copying all-in-one machine and computer all-in-one machine. OfficeMate Copier is simply a machine that integrates fax, printing and copying functions. All-in-one computer is an all-in-one computer. The concept of all-in-one desktop was first put forward by Lenovo Group, which refers to the integration of the host of the traditional split desktop into the display, thus forming an integrated desktop. The working principle of all-in-one machine is similar to that of traditional mimeograph, which prints images on paper. However, the wax paper is not through ink, but through tiny holes in the wax paper (the holes constitute the wax paper or scanning wax paper used in the original offset press), but a heat-sensitive wax paper, which consists of a very thin film and cotton grease. Therefore, very fine holes are made in these films, which makes it possible to print very fine and high-quality prints.