Dear, is the surface an arc or a wave? A rotating fixture can be added to the cambered surface, and the wave surface depends on the height difference. If the height difference is too large, it is difficult to make the difference, because the focal length has a great influence on the effect when marking. If the height difference is too large, the focal length will be unstable and the marking effect may not be very good. The picture shows the arc surface of Wanting laser.