RY-Q90PD-4/AT/MDK Automatic set collar,automatic set waist overlock sewing machine
RY-Q90TPD-4/AT/KS/RTF Automatic set collar,automatic set waist overlock sewing machine
RY-Q90TD Computerized Small sylinder upper and lower Overlock Sewing Machine Series
RY-Q90D Direct Drive Computerized Small sylinder Overlock Sewing Machine Series