Cold principle: not burning, but breaking bonds
UV photons carry high energy and act directly on surface molecules, vaporising or discolouring them instead of melting by heat like infrared. The result is a tiny heat-affected zone, sharp edges, high contrast and no surrounding thermal-stress cracks.
Materials it handles best
A UV laser marker is ideal for glass, crystal, sapphire, PC, ABS, PET, medical plastic, silicon wafers and ceramics — heat-sensitive or brittle. It also marks clear white or black characters on black mirror, transparent parts and white-goods shells where screen printing struggles.
How it splits work with fiber and CO₂
Metal goes to fiber, organics (wood/leather/paper) to CO₂, and UV fills exactly the heat-sensitive gap where both fiber and CO₂ tend to damage the part. They are not replacements but a material-based division of labour covering most marking scenarios.
Typical industries
Electronics (tiny text and QR codes on PCBs, chips, connectors), medical devices (permanent UDI traceability codes), consumer goods (premium marks on cosmetic bottles, wine bottles, phone accessories), photovoltaics and semiconductors. Wherever fine, traceable, non-damaging marking is required, UV fits.
Procurement Q&A
Standard machines ship in 7 days; rush orders in 3–5 days; custom non-standard builds in 15–30 days. Before production we confirm drawings, process and sample results to avoid rework.
18-month warranty on the machine. Core parts like the laser source and galvo are replaceable standard parts with long-term supply, so repairs and swaps are documented.
Yes. Send a sample and we return a real test video within 24 hours and ship the part back. Key models get a 48-hour aging test, so you see the actual result on your own workpiece before deciding.
Open Mo–Su 08:00–23:00 (GMT+8) with English support. Reach us at +86 159 9995 5734, WhatsApp +86 190 9874 6815 or Laurie@laserdg.com. Machines are packed to export standards.
We have 3+ engineers, 7+ authorised patents and 5000+ units shipped. Standard parts like laser source and galvo are stocked long-term for predictable replenishment.
Price depends on the model (UV / fiber / CO₂), power, laser-source brand (Raycus / JPT / IPG) and configuration (galvo, field lens, control software). Zhongyi Laser lists the exact laser-source and galvo models on the quote and in the contract, so the configuration is verifiable and easy to reorder or replace later.
It reliably marks characters around 0.2mm and readable QR codes on chips and connectors, depending on galvo and field-lens setup. Send a sample and we will show you a real test.
It comes from frequency-tripling 1064nm to 355nm: a more complex, precise optical chain. But it marks heat-sensitive materials that fiber either cannot or tends to damage — value fiber cannot replace.
With UV cold processing, almost never — there is no heat build-up. That is the core advantage of UV over CO₂/fiber on plastic: clean edges, no brittleness.