The Galvanometer-based fiber laser marker is mainly used for online spray coding and marking on the surfaces of various products or outer packaging. Unlike traditional laser markers that can only mark stationary objects, during the spray coding and marking process, the products keep flowing on the production line, which greatly improves production efficiency and enables the laser machine to meet the requirements of industrial production. It basically covers all the application ranges of inkjet printers. This laser marker is no longer a simple annotation of product dates and batch numbers. Due to its unique visual and tactile effects and permanent unerasable characteristics, it also has strong anti-counterfeiting and anti-mixed goods properties.