The fiber laser marking machines uses two levels of tube achievement for pump source. This machine uses a unique pump coupling technology and its averaged working time amount to 100,000 hours. This laser machine has an exquisite volume and it is suitable for adverse circumstances: The optical fiber laser machine has an extremely flexibility, designs extremely nimble and has a compact design. The glass fiber surface area / volume ratio is high and has a good effect of radiation. It is not necessary to use an enormous water cooling system - an air cooling system is sufficient. Even if attacking high, high vibration, high temperature, dust and other adverse circumstances, this laser machine continue normal work. Exempts the maintenance operation.