This machine can do single stitching, double stitching and strong sthtching. Stitching distance: 30-120mm, auto count the stitching distance and adopt the imported motor. Adopt eview brand touching screen. Adopt siemens PLC and electric, the photoelectric swich is Korean AUTONICS. Adopt german bearing Max. cardboard size: 2800mmX1515mm Min. cardboard size: 550mmX300mm Speed: 400 stitches/ minute Stitching quantity is1-99 stitches Power: 6kw