How to use the right-angle folding machine of standard chain double-needle sewing machine

This is a packaging machine, isn't it? Double-needle double-chain sewing machine is equivalent to nail burying machine, but its ability is poor after eating. Take two pieces of cloth and put them directly into the drawer. Align the front and wrap it. It doesn't matter. The cloth at the bottom is a little. So the first two pieces can be the same. This machine is used for backward tilting, rear gear and inner gear of trousers. Side seam. Shoulder seam of shirt. Sewing, etc. . . .