Asphalt Cutting Disc,Cutting Asphalt With Angle Grinder,Angle Grinder Blade For Asphalt,Angle Grinder Asphalt Blade Hubei Chengze Diamod Products Co., Ltd. , https://www.ryomaltools.comIf the adsorption object lighter, you can choose to lift 0.5 kg per square centimeter; if it is medium weight, optional per square centimeter can lift 0.75 ~ 0.7 kg) If heavier, you can choose per square centimeter can lift 0.9 kg; of course , The same vacuum pump can also be taken to increase the number of suction cups to improve the overall suction force, but the corresponding time to reach the desired suction force has also increased (because the suction cup increased the volume to be pumping also increased) .