... 4.Speed:60P/min 5.ISO,CE Economic grooving machine for corrugated cardboard General features:1. Manual electric phase adjustment, ... paper, slice the corner, groove, roll the line.3. Three group for grooving, one group slice the corner, two groups separate paper ... has been installed, our engineers can come to customers' factory for maintaining when mal-function. high quality K Series Economic Grooving ...