Laser marking machines are categorized by the products they mark: Fiber (Metal) Laser Marking Machines, CO2 (Carbon Dioxide) Laser Marking Machines, UV Laser Marking Machines. Fiber laser marking machines are primarily used for marking metals and certain non-metals. CO2 laser marking machines are designed for marking non-metals like leather, plastic, and wood. UV lasers are mainly used for glass, electronics, food packaging, and PC materials. In terms of marking methods, there are desktop laser marking machines, handheld laser marking machines, 3D laser marking machines, online laser coding machines, and flying laser marking machines.