ZJ9800DD-4 direct-drive computerized lockstitch (Auto foot lifting)

1. prevent thread pile up under the fabric

2. replace the thread take up leaver, so that hands will not be hurt

3.prevent touching presser foot when foot raise up when sewing heavy materials

4. prevent short thread jumps

5.accuracy of needle position is higher than traditional madchines, to avoid embarrassment of the heavy materials get out when machine stops

6. prevent presser foot lift up quickly, so avoid the crash between presser foot and thread tak up leaver.

7.has the same function of traditional thread take up leaver.