... price 2,different modle size 3,3 layer , 5 layer or 7 layer Corrugated board production line in 3' 5' 7 layerA. Main technical ... when the 1st testing of the production line. 7 Lubricating oil, consistent lubricant, machine oil, hydraulic oil.8 Provide food ... (include 4 inch air pipe ) 1.5m3Storage tank14Glue making systemGF-T1Glue supply by circulation15Electric control systemEF-T1Operation counter ...