Inerrant Robotomation offers UV laser marking machines in India. Get high precision, permanent marks on various materials like plastics, metals, glass with our cold marking technology. Contact us for a free quote! UV laser marking utilizes ultraviolet lasers with a short wavelength (typically 355nm) to create permanent marks on surfaces. Unlike traditional marking methods that use heat or abrasion, UV laser marking offers a "cold" process, minimizing the risk of damage to heat-sensitive materials.