This guide specifies the required parameters that should be included in an industrial fiber laser product, such as the terminology, classification, test method, for fiber laser product. The Guide is intended to be used by fiber-laser producers, laser-processing equipment integrators and end-users. This standard specifies performance parameters and the test method for industrial fiber lasers. The purpose is to improve the mutual compatibility among laser manufacturers, system integrators and end users, provide a uniform specification and promote the development of the industrial fiber laser sector.