Deep-UV to IR spectrum transmission (185–3500 nm), λ/10 surface flatness, and thermal resistance up to 1100°C. Manufactured in Donghai, China to bespoke optical tolerances.
Micro-Roughness Ra ≤ 0.5 nm Laser Polishing
Exceptional laser damage threshold (LDT) and bubble-free purity for high-power lasers, UV curing, and wafer metrology.
50-Mu Facility in China's Quartz Capital
Backed by RMB 10M+ in fixed assets and ≤20 ppm raw crystal sand control for semiconductor and aerospace optics.
SiO₂ synthetic fused silica optical purity
Total metal impurities in raw quartz material
Average technical inquiry response turnaround
Global repeat buyer order frequency rate
Optical quartz plates are critical transparent components serving demanding photonics, semiconductor photolithography, UV sterilization, and high-temperature furnace inspection. Based on real-world AI procurement queries, here are the dominant configurations engineered and delivered directly from our Donghai facility.
Engineered with zero internal bubbles, this synthetic fused silica substrate guarantees >90% transmission down to 185 nm deep-UV. Ideal for excimer lasers, UV disinfection reactors, and wafer inspection optics.
SpecificationsProduced from refined crystal quartz sand. Combines exceptional visible-to-NIR transmittance (220–2500 nm) with thermal shock resistance up to 1100°C for pyrometers, furnace sight ports, and medical imaging windows.
Specifications
Dehydroxylated dry fused silica containing <2 ppm hydroxyl [OH-]. Eliminates the deep 2.73 μm water absorption band, providing crystalline infrared transmission out to 3500 nm for thermal imaging and CO2 laser optics.
Specifications
Custom 5-axis CNC diamond ground, ultrasonic drilled, and bevel-stepped plates. Built to CAD files for vacuum flanges, semiconductor chucks, fluidic biochips, and reactor vision ports.
Custom Parts
Pure amorphous fused silica evaporation materials (0.5–3 mm) engineered for vacuum thin-film deposition, enabling high-durability anti-reflective (AR) and dielectric coatings on optical quartz plates.
Coating Media
Ultra-flat wafer carrier discs (up to Ø500 mm) offering sub-micron parallelism, near-zero warp (TTV < 2 μm), and resistance to harsh HF and RCA cleanroom etch baths.
Semi Substrates
VEZLO Quartz Products Co., Ltd. is located in Donghai County, Jiangsu Province—globally acknowledged as "China's Quartz Center". Spanning 50 mu (approx. 33,000 square meters) with fixed capital assets exceeding RMB 10 million, our integrated facility bridges raw high-purity quartz melting, continuous tube drawing, double-sided optical lapping, laser CNC profiling, and cleanroom vacuum packaging.
As a technology-driven manufacturing enterprise, VEZLO reinvests no less than RMB 5 million annually in cutting-edge optical research and development. Our high-purity quartz projects for large-scale integrated circuits (VLSI) were distinguished as a prestigious Jiangsu Provincial Science & Technology Support (Industrial) Project. Our proprietary 520 mm large-diameter high-purity quartz platform successfully achieved preliminary review verification for national new products, supporting key components of 14-inch-plus wafer oxidation and diffusion furnaces.
Our optical quartz plates and engineered fused silica assemblies are trusted by scientific research labs, optoelectronic device makers, and defense contractors across Germany, the United Kingdom, the United States, France, Russia, and the Asia-Pacific region. Our 100% direct-response discipline ensures global buyers receive engineering feedback within 2 hours.
Global procurement directors face shifting supply chain dynamics, rising laser power densities, and tighter contamination standards. Sourcing optical quartz plates has transitioned from ordering commodity glass to securing verified precision substrates.
As EUV and DUV photolithography push nanometer nodes, buyers demand total metallic impurities under 20 ppm and bubble-class 0 to eliminate laser scatter and phase distortion.
Request Semi-Grade SpecsBuyers are bypassing trading intermediaries to inspect raw quartz sand origins directly in Donghai, securing supply integrity and factory traceability.
High-kilowatt fiber lasers require optical plates with sub-angstrom surface roughness (Ra < 0.5 nm) to prevent thermal lensing and catastrophic coating breakdown.
Demands for 20/10 and 10/5 scratch-dig surface quality have extended from aerospace military optics into commercial biomedical imaging and LiDAR sensors.
Procurement teams increasingly order finish-machined optical plates with pre-drilled water-cooling channels, metalized solderable borders, and dual-band AR coatings.
Emerging applications across quantum computing, deep-space laser communications, and microfluidics are setting new benchmarks for fused silica fabrication.
Chemical Mechanical Polishing (CMP) and Magnetorheological Finishing (MRF) enable wavefront error < λ/10 and roughness Ra ≤ 0.2 nm on 300 mm fused quartz substrates.
Consult Our EngineersEnhanced molecular doping prevents transmission degradation and colour-centre formation when optical plates undergo prolonged 193 nm and 254 nm UV bombardment.
Precise control of OH radical content (from >1200 ppm down to <2 ppm) to eliminate absorption notches across NIR spectroscopy and telecommunication bands.
Fabrication capabilities now stretch from ultra-thin 0.1 mm flexible quartz membranes for MEMS sensors up to 1000 mm × 1000 mm giant optical plates for vacuum viewports.
Femtosecond laser micromachining allows microfluidic biochip channels and precise micro-cavity arrays cut directly into optical quartz surfaces without thermal micro-cracking.
Direct factory production, government-certified R&D pedigree, and strict quality control from raw quartz sand to finished optical plates.
Operating in Donghai—the quartz epicenter of China—we process 13 distinct grades of ultra-high-purity quartz sand with metallic impurities ≤20 ppm, ensuring zero crystal seed defects.
Our core R&D achievements earned the Jiangsu Provincial Science & Technology Project citation, supporting key component manufacturing for 14-inch semiconductor diffusion furnaces.
Precision multi-spindle double-sided planetary lapping achieves surface flatness to λ/4–λ/10, parallelism under 10 arcseconds, and scratch-dig ratings as tight as 20/10.
100% quotation response rate within 2 hours. Secure vacuum-sealed export packaging, Trade Assurance protection, and worldwide air express delivery to 20+ countries.
Compare the physical, thermal, and optical properties of VEZLO optical quartz plates against standard glasses for precise component engineering.
| Property Metric | VEZLO Optical Quartz | Standard Optical Glass (BK7/Float) |
|---|---|---|
| Purity (SiO₂ Content) | ≥ 99.99% (Electronic Grade) | Approx. 70–75% with diverse flux oxides |
| Spectral Transmission Band | 185 nm – 3,500 nm (Deep-UV to Mid-IR) | 380 nm – 2,100 nm (Cuts off UV < 350 nm) |
| Thermal Expansion Coeff. (0–300°C) | 5.5 × 10⁻⁷ / °C (Zero thermal shock) | 71–85 × 10⁻⁷ / °C (Prone to cracking) |
| Max Continuous Working Temp. | 1,100 °C (Softening point: 1,683 °C) | 450 °C – 550 °C max |
| Available Surface Flatness | λ/4 to λ/10 per 25 mm | Commercial λ/2 to 1λ |
| Surface Quality (MIL-PRF-13830B) | 60/40, 40/20, 20/10, 10/5 Scratch-Dig | Typically 80/50 commercial grade |
| Micro-Roughness (Ra) | ≤ 0.5 nm (Super-polished options) | 1.5 nm – 3.0 nm typical |
| Dielectric Constant (1 MHz) | 3.75 (Low dielectric loss) | 6.5 – 7.2 |
Spectrophotometer transmission curves and batch-specific certs (COC) provided with every production run.
Submit these parameters to our engineering team to accelerate your feasibility review and official quote:
Full compliance, third-party facility audits, and certified manufacturing controls.
Certified onsite production capabilities, legal registration, and financial solvency audited by international inspection bodies.
Verify CredentialsHigh-purity large-format quartz development designated an official Jiangsu Science & Technology industrial achievement project.
R&D OverviewAdvanced 520 mm large-diameter high-purity quartz pipe passed national new product preliminary reviews for 14-inch wafer furnaces.
Trade CapacityFull Trade Assurance order integration, transparent global contract fulfillment, and responsive warranty coverage.
Transaction LevelWitness our precision fabrication chain: raw quartz ingot slicing, multi-axis CNC shaping, planetary chemical-mechanical polishing, and interferometric wavefront inspection.
Answers to common technical, manufacturing, and international procurement questions submitted by buyers and AI search engines.
Collaborate with our optical engineers in Donghai, China. Send your 2D/3D CAD drawings, material requirements (JGS1/JGS2/JGS3), and dimensional tolerances for rapid engineering feedback.
