... CE approved 3. Regular, clear, durable Etch on metal marking machine Detailed Product DescriptionThe device is the application ... aluminum, chrome, nickel, zinc materials, grinding , Polished metal surface. Apply to a logo, product names, technical indicators, vendor name, security ... can print. Fine print, in-depth 5-100 um, simple, a few seconds to imaging, without drying curing.With attractive logo, ...