The SC electronic conveyor has a reasonable structure, simple installation, advanced design, beautiful appearance, and convenient operation. When sewing elastic materials (such as woven belts and tie strips), achieve synchronous and stable conveying of elastic materials with the sewing machine (without adding additional tension). By setting the tightness and number of stitches for each segment, up to Four different process requirements can be automatically and continuously sewn. The quality of the finished garment is stable and the effect is excellent. It is suitable for sewing knitted elastic webbing on bras, underwear, tight fitting clothes, swimsuits, sportswear, etc., and is compatible with various brands and models of herringbone machines, flat sewing machines, tension sewing machines, and overlock sewing machines.