Gc2281 - 1b long arm tube type double needle sewing machine , besides having model gc2201 characteristics , have needle , feed dog , presser foot give material function in step also , can prevent sewing the material and slipping and moving , the line mark formed is beautiful , neat 1b型长臂筒式双针缝纫机，除具有gc2201型特点外，还具有针、牙、压脚同步送料功能，可防止缝料滑移，形成的线迹美观、整齐。
He is dedicated to feeding dogs and cats with superior nourishment , meeting all the known nutritional requirements for different stages of an animal s life , while reducing large scale animal suffering in agribusiness , and making one step for humankind toward the closing down of slaughterhouses 詹姆仕致力于开发高营养猫狗用素食，提供猫和狗在不同生长期所需要的全部营养，并致力于大规模减少动物在农牧综合企业中所受的痛苦，以及使人类往关闭屠宰场的方向迈步。
At present , there are two kinds of homemade domestic sewing machine s feed dog , single type and double type , when we use single type , it mainly depend the logn teeth on th eleft and presser foo tbottom to fix material . do by presser foot s shape and feed dog , it s more agility and covenient to stitch all kinds of curves and camber lives . therefore , single type have priority to be used to homemade domestic sewing machine ja and jb 目前,国产家用缝纫机的送布牙有单长型和双长型两种型式.当用单长型送布牙时,主要依靠左侧单排的长与压脚板"咬住"面料.通过压脚板的形状和送布牙牙的配合,对各种弯曲或弧状线缝的缝纫,就会操作灵活和方便,因此大多数国产家用缝纫机ja型和jb型优先配用单长送布牙
