PETG is a non-crystalline copolyester. In its production process, since a certain amount of ethylene glycol is replaced by 1,4-cyclohexane dimethanol (CHDM), crystallization can be prevented, thereby improving manufacturing and transparency. Its products are highly transparent and have excellent impact resistance, especially suitable for forming thick-walled transparent products. Its processing and forming performance is excellent, and it can be designed in any shape according to the designer's intention. Plastic and other molding methods can be widely used in the markets of plates, sheets, high-performance shrink films, bottles, and profiled materials. At the same time, its secondary processing performance is excellent, and it can be modified by conventional machining.