Is a new product of heavy duty lockstitch sewing machines. It is designed with link thread take-up, large rotating hook, link top and bottom feeding mechanism and presser foot alternating mechanism. it has the teatures o1 outstanding heavy duty sewing. outstanding multi-layer sewing capability, narrow stitch length difference between forward feeding and reverse feeding, beautiful stitches, low noise, low parts wearing, and easy maintena-nce. this machine is widely available for stitching all kinds of leather, synthetic leather,canvas for sofas, cushions, bags,sports apparatus, office furniture and heavy duty gaments.