PET tube is braided into tubes with high tensile environment-protected PET monofiament,it has excellence outstanding in endurance,aging and ultraviolet protecting,and high resistance to acidic and alkali and saline solutions, it can be used in temperature from -40℃ to +155℃,it has excellent retractility,flexibility,abrasion-resistance,flame-resistance and temperature-tesistance etc. It has good appearance and various colors. It is widely used in bundling protection of automobile wire,computer wire,cable wire and sound box wire etc.