It is easier to make a flatbed car. According to relevant public information, when making bags, flat-bed cars are mainly used to make interior cloth or clothes, and double-needle cars are suitable for sewing two pieces of cloth, so making bags is relatively simple. 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.