Engineered for extreme thermal shock, deep ultraviolet transmission, and high-temperature semiconductor handling. Calibrated from Ø1.5 mm to Ø80 mm with CNC precision machining.
Semiconductor & Optical Quartz Rods
Zero-bubble fused silica, tight mechanical tolerances down to ±0.01 mm, and superior acid corrosion immunity for next-gen cleanrooms.
Precision Cold-Worked Fused Silica Sticks
Ground, optical fire-polished, slotted, tapered, or drilled quartz rods engineered to exact technical schematics.
Full diameter span for continuous draw & custom rod forming
Max conventional metal impurities via ultra-pure refined raw sand
Continuous working temperature with thermal shock resistance
Global buyer reorder rate backed by verified export quality
Different thermal, optical, and chemical environments require specific silica purities, drawing processes, and end-finishes. Review our primary industrial-grade quartz glass rod configurations tailored for tier-one OEM applications.
Produced using continuous electrical fusion methods. Features outstanding optical clarity, chemical stability against corrosive acids, and high continuous heat resistance up to 1100°C. Ideal for laboratory stirrers, sight glasses, fluid level indicators, and industrial heating brackets.
Get a QuoteFormed from refined natural Donghai quartz sand with total metal impurities under 20 ppm. Chemically cleaned and flame-stabilized to eliminate micro-bubbles and striations. Essential for fabricating diffusion furnace boats, quartz paddles, cantilever arms, and cleaning tank racks.
Get a QuoteEngineered for high transmission efficiency across UV (185–260 nm), visible, and NIR spectrums. Optical fire-polished and double-end flat polished (surface quality 60/40 or 40/20 scratch-dig). Utilized in UV curing fixtures, laser resonators, medical light conductors, and fiber preforms.
Get a QuoteNeed bespoke geometries, slotting, precision threading, or ground joints on quartz glass rods?
Get a Quote
VEZLO Quartz Products Co., Ltd. is situated in Donghai County, Jiangsu Province — universally recognized as the heart of "China's Quartz Center". Operating across an integrated 50 mu (approx. 33,000 m²) manufacturing complex with fixed assets exceeding RMB 10 million, we control the entire value loop: from native quartz crystallization and ultra-pure sand refining to continuous thermal drawing, flame fabrication, and CNC micro-machining.
Our industrial development is underpinned by deep engineering pedigree. Our 320 mm high-purity quartz tube for ultra-large scale integrated circuits was designated an official Jiangsu Provincial Science and Technology Support (Industrial) Project. Concurrently, our self-developed 520 mm large-diameter high-purity quartz system successfully passed the national new product preliminary evaluation. We have secured Jiangsu provincial achievement transformation support for high-purity diffusion furnace quartz components supporting wafer diameters beyond 14 inches.
Reinvesting over RMB 5 million annually into research and technological advancement, VEZLO Quartz guarantees stringent raw material verification, zero trace contaminant leaching, and dimensional consistency on every quartz glass rod shipment sent across Germany, the UK, the United States, France, Russia, and East Asia.
Global demand for precision fused quartz glass rods is experiencing massive transformation spurred by sub-5nm semiconductor nodes, high-power industrial lasers, next-generation solar PV cells, and advanced photochemical sterilization.
Global procurement teams are moving away from intermediaries, prioritizing vertically integrated manufacturers to hedge raw material inflation and secure supply chain transparency.
Get a QuoteAs 3D NAND and gate-all-around (GAA) logic wafers demand higher thermal budgets, sodium (Na), potassium (K), and iron (Fe) contaminants in quartz structural rods must be kept under micro-ppm levels to prevent crystal lattice poisoning.
High-capacity solar diffusion boats and industrial CVD carriers increasingly demand continuous large-diameter quartz glass rods (Ø40 mm to Ø80 mm) possessing zero thermal striations and perfectly isotropic stress distribution.
Standard drawn dimensional tolerances (±0.5 mm) no longer satisfy robotic wafer handling. End users now require centerless OD grinding, edge-chamfering, laser slotting, and optical fire-polishing with micron-level tolerances (±0.02 mm).
Rapid growth in excimer laser equipment, ballast water treatment, and industrial UVC disinfection lamps has boosted demand for low-OH (synthetic) and specialized doped quartz rods engineered to avoid solarization over thousands of operating hours.
From simple fire-drawn stirring rods to multi-axis CNC micro-machined semiconductor components, VEZLO leads continuous technical iteration in fused silica forming.
Get a QuoteVerify key physical, mechanical, thermal, and optical properties of VEZLO high-purity quartz glass rods before finalizing your engineering designs.
| Technical Property | Tested Parameter / Metric | Engineering Impact |
|---|---|---|
| Chemical Purity (SiO₂) | ≥ 99.99% | Eliminates thermal devitrification and wafer contamination |
| Diameter Span Availability | Ø 1.5 mm – Ø 80 mm | Complete sizing from capillary cores to heavy load supports |
| Dimensional Tolerance (Ground) | ± 0.01 mm to ± 0.05 mm | Precise fit into automated chucks and optical barrels |
| Continuous Operating Temp. | 1,100 °C | Resists sagging and deformation under constant thermal load |
| Peak Short-Term Temperature | 1,300 °C | Withstands rapid thermal ramp-up and process spikes |
| Thermal Expansion Coeff. (CTE) | 5.5 × 10⁻⁷ / °C | Near-zero expansion; survives water quenching from red heat |
| Annealing Point / Softening | 1,215 °C / 1,683 °C | Exceptional dimensional retention under extreme heat cycles |
| Refractive Index (n_d) | 1.4585 | High-efficiency light piping with minimal chromatic dispersion |
| Hydroxyl Content (OH⁻) | ≤ 20 ppm (Standard: ≤150 ppm) | Prevents vacuum bubble inflation and infrared absorption dips |
| Dielectric Strength (20°C) | 25–40 kV/mm | Superior electrical insulation in high-voltage plasma zones |
Certified spectrographic analysis and batch material test reports (MTR) are provided alongside commercial export documentation.
Provide our engineering staff with these five technical parameters to receive an exact production quotation within 2 business hours:
Direct factory production, authoritative provincial R&D achievements, and end-to-end quality inspection create reliable long-term supply chains for global industrial buyers.
Situated in China's quartz capital, we select from 13 proprietary grades of refined quartz sand (total metals ≤20 ppm), giving us source-level control over glass density and structural stability.
Factory ProfileLead developer of the 320 mm high-purity quartz system for integrated circuits (Jiangsu Industrial Project) and creator of 520 mm large-diameter quartz systems with national recognition.
View CredentialsEngineering-led international sales support provides prompt feasibility analysis, instant CAD reviews, and transparent order tracking with an average response time under two hours.
Trade CapacityServing buyers in Germany, the UK, the US, France, and Russia with multi-layer cushioned EPE packaging, drop-tested export cartons, and fumigated timber crates with anti-shock monitors.
Export HistoryWitness our continuous melting crucibles, digital thermal draw towers, and cleanroom finishing lines delivering repeatable physical performance across every millimeter of quartz.
Essential engineering insights covering tolerances, thermal resistance, customization, and export delivery to help streamline your procurement decisions.
Have technical questions regarding your engineering blueprints?
Get a QuoteUpload your engineering drawing, select required diameters from Ø1.5 mm to Ø80 mm, and get direct factory pricing with comprehensive material purity guarantees.
