Beijing Dongbao cardboard packaging machinery co.,ltd is a new pattern joint-stock enterprise reunited from stated enterprise. the company specializes in producing the high-quality production equipments,the major is discovery,development and production of three layer,five layer,seven layer corrugated cardboard production line,width of production from 1400mm to 2200mm,production speed from 60 to 200m per minute, the products have been sold in many ...