Attation please, it cannot be used on any metal , like aluminum, stainless steel, iron etc. Why You Need It: Direct engraving on glass, ceramics, etc. may failed and cannot be coloured, while laser engraving colored paper is the perfect solution for those issues. About Colors: Some colors may be changed after laser engraving, so the paper color looks like different from the , we remark ture color on the back, please subject to marked color About Quality: All colored carved papers be well packed, but due to long time shipment, some slight creases or air lines may cuased, please do not worry, it is not quality issue, and 't affect the engraving. Attention Please Color engraving has high requirements on laser and system parameter settings. For fiber laser, diode laser, UV laser and CO2 laser engravers, the CO2 Laser engraving . As different lasers, different materials and different colors of engraving paper require different parameter settings, 't give users specific parameter values. Users need to adjust the parameters through testing to get good engraving results. If you are not very professional, we suggest you buy the black one to try first, becuase black is easy to color. Compatibility Compatible with almost of laser engravers, like CO2 Laser Engraver Machine Fiber Laser Engraver Machine UV Laser Marking Machine Diode/ Semiconductor Laser Step 1: Distinguish the Front Side : Cutting Color Paper Step 3: Soaking Color Paper Step 4: Stick on the Object Step 5: Prepare to Engrave Step 6: Start Engraving Step 7: Soaking Color Paper Step 8: Remove Excess Color Paper Step 9: Product Display Note: Due to different production batches, there may be slight differences in products. Colour:Photo Color Material:Paper Package Contents: 12 x Engraving Marking Paper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.