CPET is polyethylene terephterate material, odorless, tasteless, colorless, non-toxic, is the best food packaging material recognized in the world today, after special process, CPET sublimation into a low temperature resistance -40℃ high temperature resistance 220℃ special material. Products made from CPET materials can be processed directly in the oven for various foods. In the heating process will not release any harmful substances and gases, by Europe and the United States and other countries called green packaging. CPET material itself has good barrier, oxygen penetration rate is only 0.03%, and the more after heating barrier performance is stronger, food preservation, quality function is incomparable to any material. Widely used in aviation meals, it is the best choice for oven boxes.