specialty： 1.Sritable for sewing snd feeding all kinds of hesvyweight materal.. By enlarging the needle bar strode and the height of knee-lifter sndadopting double -capacity of tinsion,enablingthe siwing of thichk thread and high tension ,which is suitable of sewing all dinds of heavy-weight material. Outstanding feeding quality thanks to the newly-kesigned square-shaped feeding mechanism moreover,the rateofalternating vertical movement will not chang ed even if the material thickness is changed ,thereby,avoiding thestitcheng gathering and form stable stitching ,length. Equipped with small lower feeding adjusting mechanism can adjust the stitch shipping. 2.Excellent for sewing sharp curves. Linear-shaped needle bar can sew tubular articles with min ,altimeter of 40mm.can also sew shoes,bags,smallwallets and other small article smoothly. Also equipped with gauge for small article. 3.Outstanding operation and maintain capacity, The machene adoptseasy-unloaded cover under machene bed,so that the thread can be chang ed easily. Thestitch leng th can be adjudted easily through feeding adjusting pen ,the visible needle posit,bobbin mechanismset before machine bed,big eheel and so on whichenhance the operatingquality. The kenee-lifter isset indide machine ,which available the pressure snd improve instant capacity. The machine bed is open.easyto adjust operation. It adoptsoil wick lrbrication systemgreatly redrce the complicated process of lubrication some parts of hook set are operated by hands. Upper feeding mechanesm is set indide machine head ,avoiding oil scattering. 4.Emlarg ing the feeding strength,reducing the frequency of stitch skipping and stitch gathering. 5.The rate of alternating virtical movecent will not changeevev if the thickcessof materials changed 6.Max left of the presser foot :16mm 7.MAX alternating vertical movement 6.5mm