we apply  the new technology which use some belts to bind the cardboard and the roller together to make the groove shraight and correctly.Thereby ,the products are of great quality.

        1.power-saving.nomally.the groove machine is 15km,this one is 2.2km,which reduce the cost.

        2.environment-protecting.noiseless and dustless ,also, the wastage is recyclble.

        3.the groove is very smoth,and the removed part of the cardboerd is perfect without damage.