... , then go into No.1 Extruder---Inject foaming agent--After filter changer, material go into N0.2 Extruder--Extruded from mold ... Gentian type double-stage series high foam technology. 2. This equipment adopts high speed hydraulic filter changer, which has steady feature, can ... ,such as fast food box ,aquatic plate,supermarket tray ,cake tray , KT board ,instant noodle bowl ,foam tray etc. 8. It is ...