BIG POWER STEPPER DRIVING MACHINE, SUITABLE FOR ADVERTISEMENT LINE ENGRAVING AND CUTTING. SUPER QUALITY AND GOOD PRICE Features: 1) STR series ... chemical plate, PVC, PP, copper and aluminum 3) High speed, high efficiency, the average efficiency is several times as the ... engraving and carving 4) High precision, 1mm character can be cut and seen clearly. The machine adopts a driving instrument with ...