Fiber Laser Markers are developed speciallly for Marking on Steel & Metal Parts with More Depth of Marking as well as Dark Black Marking which stays forever. Top-level 40 W high output FAYb laser marker marks or processes deeper and faster on metallic workpieces. Handles an expanded range of laser marker marking processing applications.laser marker an automatically adjust for variations in focus from one part to the next and ensure ease of use and superior quality.Durable protective structure is a benefit in harsh environments containing dust and water.