机针与送布牙同步送料，可防止缝料滑移；采用底线量确
认窗，可以方便确认底线量；采用左右独立的取线弹簧，
可方便调节线的松紧；采用自动供油系统，降低油耗。 适
用缝制大衣、制服、牛仔裤、包袋、装饰缝等。
On system Feed by needles and feed dog，can prevent
the slide between the materials;Adopt bobbin thread
confirming window, can easily check the quantity of the
bobbin thread;Can adjust the tension of thread easily
through the left and right self-govern spring;With auto
oil lubrication.Suit to process pants, jeans, work suits
and luxury clothes.

JH8450D/JH8420D
双针直驱自动切线平缝机
Double needle direct Drive lockstitch
sewing machine with Auto trimmer