--- description: STJ-5U UV laser marking machine is a cold laser engraving system with Ultraviolet laser for ultra-fine marking for plastics, polymer, silicon, crystal glass. title: 2026 Best UV Laser Marking Machine for Ultra-Fine Engraving image: https://www.stylecnc.com/uploads/allimg/170221/2-1F2211105450-L.jpg --- # [2026 Top-Rated Ultraviolet Laser Engraver for Sale](https://www.stylecnc.com/uv-laser-marking-machine/uv-laser-marking-machine.html "2026 Top-Rated Ultraviolet Laser Engraver for Sale") ## 2026 Best UV Laser Marking Machine for Ultra-Fine Engraving Last Updated: 2026-07-03 10:50:07 The STJ-5U UV laser marking machine is a cold laser etching system utilizing UV laser technology, specifically designed for the ultra-fine engraving of plastics (including polymers, PC, PP, PE, PET, PVC, and ABS), silicone, ceramics, and crystal glass. ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() * **Brand** \- STYLECNC * **Model** \- STJ-5U * **Maker** \- Jinan Style Machinery Co., Ltd. * **Category** \- [UV Laser Marking Machine](https://www.stylecnc.com/uv-laser-marking-machine/ "UV Laser Marking Machine") 5 (56) $9,500 - $20,000 for Basic & Pro Editions * 320 Units in Stock Available for Sale Every Month * Meeting CE Standards in Terms of Quality & Safety * One-Year Limited Warranty for Entire Machine (Extended Warranties Available for Major Parts) [Get A Quote](https://www.stylecnc.com/inquiry.html "Get A Free Quote") [Send An Email](mailto:export@stylecnc.com "Send An Email") [WhatsApp](https://wa.me/8618766148818 "Chat on WhatsApp") [Add To Cart](javascript:{} "Add To Cart") * 30-Day Money Back Guarantee for Your Purchase * Free Lifetime Technical Support for End-Users & Dealers * Online (PayPal, Alibaba) / Offline (T/T, Debit & Credit Cards) * Global Logistics and International Shipping To Anywhere * [Details](#details "Product Details") * [Videos](#videos "Demo Videos") * [Reviews](#reviews "Customer Reviews") UV laser marking machines (also known as UV laser engraving or etching machines) feature high beam quality, a small spot size, and a minimal heat-affected zone, making them suitable for ultra-fine marking and marking on special materials. They are compatible with a wide range of materials, including various plastics (such as PP, PC, PE, ABS, PVC, PA, and PMMA), silicon, glass, and ceramics. ![UV Laser Marker]() ### UV Laser Marking Machine Advantages ✓ Utilizes a 355nm output wavelength to effectively minimize thermal impact on the workpiece. ✓ High-precision galvanometer scanning system ensures marking precision and consistency. ✓ High-precision, ultra-fine laser spot guarantees flawless marking results. ✓ Employs non-contact engraving for durable, long-lasting marks. ✓ Features a large marking area. ✓ Minimal heat-affected zone (HAZ) and no thermal effects; materials do not deform or char. ✓ High processing speed and efficiency. ✓ Stable performance, compact footprint, and low energy consumption. ✓ Capable of precision engraving on a wide range of materials, including the vast majority of metals and non-metals used in the marking industry. ✓ Optional automatic loading and unloading system available to enable automated manufacturing workflows. ![UV Laser Marking Machine]() ### UV Laser Engraving Machine Applications UV laser marking machines are primarily used for ultra-fine engraving in high-end markets. Applications include marking packaging bottles for pharmaceuticals, cosmetics, food, and other polymer materials (producing clear, durable marks that are cleaner and superior to inkjet coding); marking and cutting flexible printed circuits (FPCs); creating micro-vias and blind vias on silicon wafers; etching QR codes on LCD glass; drilling holes in glassware; etching metal surface coatings; and engraving plastic keypads, electronic components, gifts, communication equipment, and construction materials. #### Types of Plastics You can Engrave with UV Laser Etching Machines Silicone. Polyamide (PA). Polyimide (PI). Polyester (PES). Polystyrene (PS). Polyethylene (PE). Polypropylene (PP). Polycarbonate (PC). Polyoxymethylene (POM). Poly ether ketone (PEEK). Polyarylsulfone (PSU, PPSU). Polymethylmetacrylate (PMMA). Polyethylene terephthalate (PET). Acrylonitrile butadiene styrene copolymer (ABS). ### UV Laser Marking Machine Specifications | Model | STJ-5U | | ---------------------------- | -------------------------- | | Laser type | Ultraviolet laser | | Laser wavelength | 355nm | | Output power | 3W/5W | | Pulse length | ＜20ns@50Khz | | Marking area | 50X50,100X100(mm) | | Frequency tuning Q | 8KHz-15KHz | | Min line width | 0.01mm | | Min character | 0.2mm | | Accuracy of repetition | ±0.003mm | | Machine power | 1000\~1800w | | Electrical power requirement | 220V/Single phase/50Hz/10A | | Cooling mode | Water cooling | ### UV Laser Engraving Machine Details ![glass Laser Marking Machine]() ![adapter Laser Marking Machine]() ![UV Laser engraving source]() ![UV Laser Marking Machine rotary device]() ![UV Laser Marking Machine rotary]() ### UV Laser Marking Machine Projects **UV Laser Cutting Leather** ![UV laser cutting leather]() **UV Laser Marking Wine Glass** ![UV laser marking wine glass]() **UV Laser Engraving Plastics** ![UV laser engraving plastics]() **UV Laser Engraving Bar Code on Ear Tags** ![UV laser engraving bar code on ear tags]() ### Why UV Runs Cold Most lasers mark by heating a material until it melts or burns. A UV laser works differently. At 355nm, its photons carry enough energy to break the molecular bonds in the surface directly, a process called cold or photochemical marking. Because almost no heat is added, there is no charring, melting, or warping. That is why it handles delicate, heat-sensitive parts a hot beam would ruin. The short wavelength also focuses to a very small spot, so marks are extremely fine, down to micro-text and dense codes. This makes UV a natural fit for sensitive [consumer electronics](https://www.stylecnc.com/cnc-solutions/Laser-engraving-machine-and-laser-marking-machine-used-in-consumer-electronics.html "consumer electronics"). ### UV, Fiber, or CO2: Which Marker Fits Three marking lasers cover different materials, and the right one saves money and frustration. Fiber lasers at 1064nm are made for metals and coated metals, and a [fiber laser marker](https://www.stylecnc.com/fiber-laser-marking-machine/raycus-fiber-laser-marking-system.html "fiber laser marker") is the choice for steel or aluminum parts. CO2 lasers at a longer wavelength suit organics like wood, paper, leather, and acrylic, and can frost glass. UV sits at the delicate end: heat-sensitive plastics, clear glass, silicon, ceramics, thin films, and fine medical or packaging marks the other two would scorch or cannot absorb. Clear and reflective surfaces that fiber passes through are where UV shines. The table below sums up the split. #### Three marking lasers at a glance: | Laser | Wavelength | Best Materials | | ----- | ------------ | ---------------------------------------- | | UV | 355 nm | Plastics, glass, silicon, delicate parts | | Fiber | 1064 nm | Metals and coated metals | | CO2 | 10.6 microns | Wood, paper, leather, acrylic | #### UV marking checklist: ✓ Match the laser to the material, UV for delicate parts. ✓ Test power and speed on a scrap sample. ✓ Use the rotary for round items like bottles. ✓ Wear 355nm-rated glasses, not fiber or CO2 pairs. ✓ Keep the beam enclosed and watch reflections. ### Frequently Asked Questions #### Can it mark clear glass and transparent plastics? Yes, and this is where UV stands out. Its wavelength is absorbed by clear glass and transparent plastics, so it leaves fine, clean marks. Fiber beams pass through clear material and CO2 only frosts glass, so UV gives the crispest result. #### Will it warp or char heat-sensitive materials? No. The cold process adds almost no heat, so thin films, cables, medical devices, and flexible circuits mark without melting, discoloring, or warping. The mark stays smooth to the touch, which matters where a burnt groove could trap contaminants. #### Can it cut, or only mark? It is built to mark and etch, not to cut thick stock. It can score or cut very thin film and flexible circuits, but depth is shallow. For a fuller picture, see [marking, etching, and engraving compared](https://www.stylecnc.com/user-manual/A-comparison-of-Laser-engraving-etching-marking-machine.html "marking, etching, and engraving compared"). #### Can it mark tiny QR codes, serials, and logos? Yes. With a line width down to 0.01mm and characters from 0.2mm, it marks micro codes and logos clearly. The [EZCAD marking software](https://www.stylecnc.com/cnc-software/ezcad.html "EZCAD marking software") adds serial numbers that count up, plus QR and data matrix codes for traceability. #### Does UV marking use ink or chemicals? No. The mark is made by the light itself, with no ink, dye, or consumables to refill or clean up. The result is permanent, non-contact, and clean, which suits food, medical, and cosmetic packaging. #### What safety gear does UV marking need? This is a Class 4 laser at 355nm, so wear glasses rated for that wavelength; fiber and CO2 goggles will not block it. UV also harms skin, and the beam is invisible, so keep it enclosed and watch reflections off glass. This [laser safety guide](https://www.stylecnc.com/user-manual/laser-cutter-safety-guide.html "laser safety guide") has more. ![2026 Best UV Laser Marking Machine for Ultra-Fine Engraving]() **Customers Say** \- Don't take our words as everything. Find out what customers say about our products and services they have purchased, owned or experienced. R #### _Rolland_ _4_ out of 5 Reviewed in France on 2022-08-29 This Ultraviolet laser kit is exactly what I need. It is a really convenient engraver for custom personalized glassware and drinkware, and it does a great job of that. My first project is etching a stemless wine glass (clear), and turned out excellent but not without trial and error. C #### _Charles_ _5_ out of 5 Reviewed in the United States on 2020-02-23 I don't write a lot of reviews but I'm compelled to write this review. The UV laser engraver has worked great for what I use it for. I use it to engrave polyethylene, polyamide, ABS and many other plastics. I love this laser machine. #### Leave Your Review 1 to 5-star rating5 stars4 stars3 stars2 stars1 star ##### Share Your Thoughts with Other Customers Review Title Your Name Your Email Your Review Guest Post Captcha ![Click To Change Captcha]() Submit Your Review ## Further Reading ### No Previous Product Available ### Desktop UV Laser Marking System for Plastic, Silicon, Glass STJ-3U[Next Product](https://www.stylecnc.com/uv-laser-marking-machine/uv-laser-marking-system.html "Desktop UV Laser Marking System for Plastic, Silicon, Glass") ## Related Stories ![How to Install & Use EZCAD for Laser Marking Machine?]() 2026-06-08By Jimmy ### [How to Install & Use EZCAD for Laser Marking Machine?](https://www.stylecnc.com/cnc-software/ezcad.html "How to Install & Use EZCAD for Laser Marking Machine?") ![How To Setup A Laser Marking System for Beginners and Pros?]() 2025-01-06By Jimmy ### [How To Setup A Laser Marking System for Beginners and Pros?](https://www.stylecnc.com/user-manual/Laser-marking-machine-system-setup.html "How To Setup A Laser Marking System for Beginners and Pros?") ![A Comparison of Laser Engraver, Laser Etcher, Laser Marker]() 2024-04-02By Charles ### [A Comparison of Laser Engraver, Laser Etcher, Laser Marker](https://www.stylecnc.com/user-manual/A-comparison-of-Laser-engraving-etching-marking-machine.html "A Comparison of Laser Engraver, Laser Etcher, Laser Marker") ![How to Buy Laser Engraver Cutter for Custom Jewelry Maker?]() 2024-01-02By Charles ### [How to Buy Laser Engraver Cutter for Custom Jewelry Maker?](https://www.stylecnc.com/blog/jewelry-laser-engraver.html "How to Buy Laser Engraver Cutter for Custom Jewelry Maker?") ![Daily Maintenance for Fiber Laser Marking Machine]() 2023-10-07By Jimmy ### [Daily Maintenance for Fiber Laser Marking Machine](https://www.stylecnc.com/user-manual/Daily-maintenance-of-fiber-laser-marking-machine.html "Daily Maintenance for Fiber Laser Marking Machine") ![Fiber Laser Engraving Machine for Consumer Electronics]() 2023-10-07By Jimmy ### [Fiber Laser Engraving Machine for Consumer Electronics](https://www.stylecnc.com/cnc-solutions/Laser-engraving-machine-and-laser-marking-machine-used-in-consumer-electronics.html "Fiber Laser Engraving Machine for Consumer Electronics") ## Related Products ![3D CO2 Laser Marking Machine for Paper Card Making]() STJ-100C-3D 4.9 (38) $10,500 - $70,000 ### [3D CO2 Laser Marking Machine for Paper Card Making](https://www.stylecnc.com/co2-laser-marking-machine/3D-dynamic-co2-laser-marking-machine-for-laser-cut-invitations.html "3D CO2 Laser Marking Machine for Paper Card Making") ![2026 Best Budget Fiber Laser Engraver with XY Moving Table]() STJ-60FM-XY 4.8 (32) $4,500 - $6,500 ### [2026 Best Budget Fiber Laser Engraver with XY Moving Table](https://www.stylecnc.com/fiber-laser-marking-machine/fiber-laser-engraver-moving-table.html "2026 Best Budget Fiber Laser Engraver with XY Moving Table") ![Desktop UV Laser Marking System for Plastic, Silicon, Glass]() STJ-3U 4.9 (33) $5,400 - $6,500 ### [Desktop UV Laser Marking System for Plastic, Silicon, Glass](https://www.stylecnc.com/uv-laser-marking-machine/uv-laser-marking-system.html "Desktop UV Laser Marking System for Plastic, Silicon, Glass") ### STYLECNC