1. This series is a kind of sewing machine for thick material, which is designed for large-scale and extra-thick objects especially. The products are divided into 3 types including double-needle, single left-side stitch bed (L) and single-needle right-side stitch bed (R) sewing machines.
2. The sewing machine driven by large power servomotor, adopts long-arm post-bed type and comprehensive feeding with large vertical shuttle hook.
3. It possesses the following advantages: stable and strong feeding, smooth and nice stitch, wide operating space and easy sewing for multilayer extra-thick materials.
4. It is also equipped with pneumatic presser lifting device with large presser stroke and pneumatic backstitch equipment with convenient and easy operation.
5. High-performance servo control system can select and set various sewing modes conveniently.

This kind of sewing machine is especially applicable for large-scale and extra-thick materials such as tent, sails, umbrella, covers for automobile, protective cover, camouflage net and so on.