ps foam sheet extruding machine: 1. good quality with ISO9001:2000 ... Plastic extruder adopts Gentian type double-stage series high foam technology.The raw material is general polystyrene granule.In ... it is winding to finished ps foam sheet rolls,After vacuum forming system,the finished PS foaming sheet can be made into ... tray,cake tray,KT board,instant noodle bowl,foam tray etc.It is widely used in the ...