1. Symmetrical structure can install two rolls of paper at the same time and continually change paper; Paper roll clamp- loosen, lift-lower, movement, contraposition, translation ect operated by hydraulic driven . 2. Expiry working width:1800mm 3. Max paper roll size: φ1500×1800mm 4. Min diameter of roll paper: φ400mm 5. Maximum loading of one side arm: 2000kg-2500kg 6. Each stand with two sets track and trolley for carry paper. 7. Pneumatic braking 8. Electrical components are controlled centralized(domestic brand) 9. One set main motor that power is 2kw, each arm power 1.5kw×4 Bearing make in HARBIN, WAFANGDIAN, LUOYANG