double pillar screen changer 1.two screen 2.single or double ... competitive price 4.Adopt advanced technology double-pillar screen changer,double-column screen changerThe filtering channels of double- ... C.Nearly all the polymers are fit for screen changer, such as PC,PMMA,PET,PS,PU,PP, ... Sheet.6.Cast film. Performance characteristic:1. The screen changer works simultaneously: when one net works, the other ...