Zeqi PP foam sheet production line adopts closed pore and microcellular foaming techniques to ensure there is no residue left and the production process is fully environmentally friendly. So the line can be safely used for food packaging. Basing on clients' needs, this unit can be applied in producing single or multi-layer co-extrusion sheets of different-specifications. The whole unit is advanced in design with optimized and reasonable configuration, high-level automation, and easy and reliable operation.