1、具有同步送料和下差动送布功能，更好应对各种组合面料的缝纫

2、下差动可快速切换(同步与吃布档位快速切换):

3、上裤腰不需要手拽辅助送料，裤身容位均匀，腰头平整不起扭

4、上拉链，送布力重大，容位均匀，上腰头平正美观不起扭，压线不赶布，止口均匀

1.it has the functions of synchronous feeding and lower differential feeding to belter cope with the sewing of various composiefabrics

2. the lower differential can be switched quickly (synchronous and cloth feeding gear can be switched quickly)

3. the upperwaisiband does not need to be pulled by hand for auxiiary feeding. The body is evenly posilioned, and the waistband is flat withoutwisting

4, with the zipper, the cloth feeding force is great, the space is even, the upper waist is flat and beautiful without twisting, thepressing line does not catch the cloth, and the seam is even