This machine has larruping Six advantage:1.Reliable frame without any distortion.2.High loading capacity,jumbo size bearing and accurate position to avoid easy abrasion.3.Upper/bottom roller is installed on the same position to enable accu-rate register.4.Alloy steel adopted to strength its rigidity and toughness5.Exquisite heating process to make rigidity of roller can reach HRC58-626.High-strength wearable gears ensures accurate contraposition for upper/bottom rollers