VEZLO Quartz Products Co., Ltd. produces high-performance quartz glass plates, sheets, circular discs, and solid quartz glass rods at our 50-mu (approx. 33,000 m²) manufacturing base in Donghai County, Jiangsu Province—internationally celebrated as "China's Quartz Center". Supported by RMB 10 million in fixed capital and an active R&D team, we supply global engineering teams with SiO₂ purity reaching 99.99% and ultra-low metallic impurity levels (≤20 ppm).
Our plates and rods undergo comprehensive cold and hot processing: diamond wire cutting, precision edge grinding, CNC drilling, step milling, laser etching, and double-sided optical polishing (Ra < 0.5 nm). Whether you require UV-grade fused silica (JGS1), optical standard fused quartz (JGS2), or infrared transparent quartz (JGS3), VEZLO Quartz provides dependable batch consistency and custom fabrication strictly to drawing.
Direct factory supply with custom dimensional cutting, flame-polished edges, hole perforation, and surface optical finish.
Crystal-clear polished quartz glass wands with high thermal endurance and chemical resistance. Bubble-free optical finish for light guides, stirring rods, and laboratory apparatus.
Flame-polished and ground fused silica rods designed for high-efficiency light transmission, optical couplers, high-power lasers, and UV curing systems.
Optimized for semiconductor heating, CVD support tooling, and thermal baffle applications. Withstands extreme thermal shock and rapid thermal cycling without softening.
Corrosion-resistant curved quartz glass shields engineered for laser cutting, welding head protection, viewports, and high-heat vacuum chambers.
Circular quartz blanks cut from natural high-purity crystal boules. Supports custom 3D laser engraving, alignment markings, step-beveling, and optical flat polishing.
Formed to custom radii for industrial pipe viewports, pyrometry windows, and furnace shields. Resists slag spatter, corrosive vapors, and sudden thermal shocks.
Circular quartz substrates with 99.99% SiO₂ purity. Available with ground or polished perimeters for high-vacuum chamber flanges, sight windows, and pyrometry.
Porous and CNC-drilled fused silica discs for wafer processing, gas distribution showerheads, sintering supports, and wet-bench chemical cleaning.
Ultra-thin, frosted, slotted, and punched quartz glassware manufactured to tight dimensional tolerances (±0.05 mm) for specialized UV and analytical devices.
Double-sided optically polished quartz plates (60/40, 40/20 scratch-dig) with parallelism < 30 arcsec for optical filters, sensors, and semiconductor photolithography.
Precision ground joints, spherical balls, sockets, and heavy-duty quartz flanges for high-vacuum, chemistry synthesis, and gas analysis systems.
Precision birefringent quartz wave plates (Ø25.4 mm standard or custom dimensions) calibrated for UV, 532 nm, 780 nm, and 1064 nm polarization control.
High-precision drawn ultra-fine quartz rods with outstanding concentricity and flexibility. Frequently utilized in sensor fibers, medical diagnostics, and micro-optics.
High-purity raw pipe and heavy-wall bar blanks ready for secondary glassblowing workshops, hot-work forming, and precision core drilling.
Standard outer diameters from 55 mm to 150 mm and custom square plates. Exceptional deep UV and near-infrared transmission, free of striae and inclusions.
Screened amorphous quartz particles and 13 grades of high-purity sand (total metals ≤20 ppm) for optical thin-film evaporation coatings and semiconductor ingot growth.
Select the appropriate fused silica formulation according to your working spectral wavelength and thermal conditions.
| Grade | Raw Material Type | Spectral Transmission Range | Typical OH Content | Primary Industrial Applications |
|---|---|---|---|---|
| JGS1 | Synthetic Fused Silica (SiCl₄) | 185 nm – 2,500 nm (Deep Ultraviolet) | ≤ 1,200 ppm | UV laser optics, excimer lithography, UV spectrometer windows, fluorescence analysis cells. |
| JGS2 | High-Purity Natural Quartz Crystal | 220 nm – 2,500 nm (Visible & Standard UV) | ≤ 150 ppm | High-temperature viewports, furnace sight glasses, UV curing lamps, general laboratory substrates. |
| JGS3 | Electrically Fused Natural Quartz | 260 nm – 3,500 nm (Infrared Transparent) | ≤ 5 ppm (Water-Free) | Infrared optics, IR heaters, thermal pyrometer lenses, CO₂ laser monitoring windows. |
In-house tooling allows us to transform raw quartz ingots and rods into finished parts within strict engineering tolerances.
Multi-axis diamond machining for steps, bevels, keyways, chamfers, and non-standard geometric shapes with tight positional tolerances.
Pitch and planetary lapping reaching optical surface quality 60/40 or 40/20 scratch-dig, surface roughness Ra < 0.5 nm, and flatness λ/4.
Ultrasonic and core drilling for hole diameters from 0.5 mm up to 100 mm without edge chipping or micro-fissuring.
High-precision grinding and fire-polishing of quartz rods (Ø0.3–80 mm) providing circular runout within ±0.02 mm.
Send your CAD drawings, required material grade (JGS1, JGS2, JGS3), dimensions, and tolerances to VEZLO Quartz Products Co., Ltd. Our engineering team guarantees a formal quote and feasibility assessment within 2 hours.
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