MT-PET is an ultra-thin heat-shrinkable tube made of polyethylene terephthalate (PET), which has good heat resistance and electrical strength. It is suitable for various medical devices, such as laparoscopes, non-surgical instruments, and medical device components, etc. The characteristics of the thin wall thickness are that it provides good insulation protection for various applications without increasing the total outer diameter of the instrument too much, and avoids damage from high-temperature environments. The high transparency clearly shows the status and position of each layer of components inside the medical device, which is convenient for observation and inspection. It has stable chemical resistance and can provide comprehensive protection for medical devices.