Portable Hand Held Industrial Sewing Stitcher, Cordless Bag1. Pure copper motor: The handheld sewing stitcher uses a pure copper motor. Compared with traditional motors, pure copper motors have higher efficiency and longer service life. It can provide stable and powerful power for the automatic bag sealing machine to ensure the normal operation of the equipment, thereby improving production efficiency. 2. Lithium battery: handheld industrial sewing machine use lithium batteries as power sources. Compared with