1. It is an extra heavy-weight material overlock sewing machine specially designed for the production of jumbo bags. 

2. The top and bottom feeding mode can complete the sewing of climbing and corner easily. The unique structure design can complete the overlock stitch and chain stitch at the same time.

3. Its steady post-bed frame design is especially suitable for the jumbo bag at the sewing inlet and outlet. It can sew the upper and lower sealing strip at the same time. 

4. With electric control presser foot lifting mechanism, the operation is more flexible and convenient, and the sewing effect is more perfect. The trimming length of the independently designed electric control heating trimming device completely meets the standard request of jumbo bags.