POF Five Layer Shrink Film/ Polyolefin/POF Shrink Film or POF Bag With excellent clarity,polyolefin shrink film is a strong,biaxially oriented,heat shrinkable polyolefin film. ... semi-automatic and automatic system. it is an economical shrink film of wide application. Available thickness: all kinds of thickness, ... Road Economic Development Area, Yiwu city, Zhejiang Province ,China POF Shrink Film