ST-313主要用于双面呢合缝，独特的暗缝方式 ，采用独特的卷边设计。

ST-313 is use for double side stitch, it have special blind stitch sewing method and the special double stitching hemming design

ST-360主要用于各种厚料的晴缝加工，采用垂直的道布方式，从而保证了翘撬缝的精度和均匀性。

ST-360 use for different kind of thick material' s blind stitch sewing.The accuracy and evenness of the blind sewing can be under control with the special vertical feeding method .to the pocket. A stacking sensor is also provided as standard to prevent stacking errors.