POF films have features of no-poison, environmental-friendliness, high transparency, high shrinkage rate, fine sealing performance, perfect gloss, strong tearing strength, fine heat shrink uniformity, suitable for full automatic packing, the best substitute for traditional pvc products. It is widely used as the packages of foodstuffs, medicines, drinks, wines, electrical and appliance, toys and daily products. Especially its outstanding shrinkability makes it the first choice of heat shrinkable package.