... Extruder adopts Gentian type double-stage series high foam technology. The raw material is general polystyrene granule. In the ... , shaping and hauling off, it is winding to finished PS foam sheet rolls. After vacuum forming system, the finished PS foaming ... plate, supermarket tray, cake tray, KT board, instant noodle bowl, foam tray etc. It is widely used in the packing of ...