Thermal transfer label features:

1) Surface material: 70# thermal sticker paper;

2) Back material: 80g glossin paper;

3) Even coating and very smooth, with the lowest fray of printing head;

4) Liner meter: 12mm or made upon customers' requirements;

5) Core pipes can be plastic or paper cores;

6) Normal stability against ambient influence: Heat, humidity, light, grease, ethanol

This label can be stick on the surface of the product, you can print the serial number on it. It can resist the high temperature.