This sofa sewing machine is equipped with compound feed machanism and horizental double capacity hook.
The compound feed system combines the upper and botton feeding mechadism, needle feed mechadism and the presser foot feeding together, which ensures the fluent sewing for heavy duty and extra heavy-duty.
This machine has two presser feet together, a smaller one inside and a bigger one outside.
It is suitable for sewing heavy materials,such as cars seats,sofas, bags,etc. And up to now, it is the model which used in sofa and car seat production mostly
Compound-feed Lockstitch Sofa Sewing Machine