Twin Screw Extruder Parts Screw and Barrel Nanjing Dart Extrusion Machinery Co., Ltd. Base Info Standard：GBTechnics：CastingFeature：DegradableMaterial：MetalTrademark：DartSpecification：dependsOrigin：Nanjing, ChinaHS Code：84772010 Description Pre：Bimetallic Barrel and Screw Element for Twin Screw Extruder Machine Next：Twin Screw Wear-Resistance Elements Screw for Parallel Extruder
