Hello, I am interested in the DEVA - Portable 3-axis CNC for Stone Carving / Engraving Machine, which is advertised on this website (same as the attached image). I would like more information about this product, please. Can it be used on different types of stones such as sandstone, limestone, and granite? What is the maximum size it can engrave? Is it a laser or an engraving cutter? And what is the speed for engraving letters? Additionally, I would like to know the price and the delivery time to France, please. Best regards.