... .Economic grooving machine for corrugated cardboard 2.Max size:1500x2300mm 3.Slotting ... 5.ISO,CE Economic grooving machine for corrugated cardboard General features:1. Manual electric phase adjustment, ... integral whole processes to separate paper, slice the corner, groove, roll the line.3. Three group ... for grooving, one group slice the corner, two groups separate paper, four groups roll the ...