PET hardy piece: has good low temperature resistance, resistant to - 30 ℃ low temperature, in a cold environment, sheet won't appear the problem such as craze, deformation, and little impact on its mechanical properties at low temperature, the product of gases and water vapor permeability is low, has good resistance of gas, water, oil and peculiar smell performance, but also has high transparency, good gloss, etc. Non-toxic, tasteless, good health and safety, can be directly used in food packaging. Suitable for frozen food packaging and cold resistant packaging of food, toys, electronic products, cosmetics, gift bags and outdoor products in cold northern regions.