The dual column hydraulic screen changer is suitable for casting films, plates, sheets, pipes, granulation, etc. It can be matched with various production lines of mixed agent products such as sols, adhesives, coatings, etc., and is used for material blending and filtration. Excellent effect, increased production, energy-saving, and waste free. plasticextrusionhydraulicdualpillarscreenchanger The dual column continuous screen changer adopts a dual column and dual workstation design, where the du