Three-line sewing machine function:
1.Automatic feeding
2.Automatic link
3.Automatic cutting
4.Automatic seaming, finish in one time (three-thread)
Automatic seaming, finish in two time (four-thread)
5. Seaming density adjustment device
6. Yarn break auto-stop device
7. Bad trimming auto-stop device
8.Yarn tension adjustor
9. Socks withdraw device