济南鸿雁文化艺术有限公司2全钢焊接结构，震动消除应力，机械强度高，刚性好。液压上传动，平稳可靠。All steel welded structure，vibration to eliminate stress， high mechanical strength， goodrigidity.Hydraulic drive，装裱机画框， stable and reliable.2 ?机械档快，扭曲同步
