【Machine main components】Laser Source: JPT MOPA M7; Repetition Rate Frequency: 1-4000kHZ; Pulse Duration: 2-500ns; Max. Pulse Energy: 1.5mJ. Control board is BJJCZ original board, Galvanometer is SINO-GALVO, Lens is Quartz field lens, expensive better than others. Power supply brand is MW. This 100W fiber laser marking machine will bring your ideas to life with greater speed, precision, and versatility than ever before; This machine compatible Lightburn software, easy control and use. Applicable Material: Carbon Steel, Aluminum, Stainless Steel, Brass, Copper,Gold, Silver, etc. Also some of nonmetal such as nylon, light button, ABS, PVC, PES,etc. Especially for jobs that require deep carving, this machine is your best choise. How to choose a lens? （Work area） The same lens, the higher the power, the deeper the engraving, The same power, smaller lens, deeper engraving, The advantage of the larger lens is the larger engraving area, the disadvantage is the weaker light. The advantage of the smaller lens is that it can engrave deeper depths, the disadvantage is the small engraving area. machine manual and software comes with U disk in the package, good support for machine working if needed. Laser Class 2, Power Output: 0.874mW Output Power, FDA Accession Number: 2420799-000 Applicable Material: Carbon Steel, Aluminum, Stainless Steel, Brass, Copper,Gold, Silver, etc. Also some of nonmetal such as nylon, light button, ABS, PVC, PES,etc. Advantage: JPT MOPA laser source can marking color on stainless steel.