VEZLOQuartz Products

VEZLO Quartz Products Co., Ltd.Fused Quartz & Quartz Glass Manufacturer · Donghai, China

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VEZLO Precision Fused Silica Engineering

Quartz Glass Disc Factory & Suppliers in the Herceg Novi Market

Direct manufacturer supply of optical-grade fused silica discs, vacuum viewports, laser protective windows, and custom high-purity quartz substrates engineered for demanding Adriatic maritime, marine scientific research, and high-temperature thermal industries.

Export-Grade Catalog

Featured Fused Silica & Quartz Discs for Coastal & High-Tech Facilities

Manufactured directly at our 33,000 m² Donghai production center, each component undergoes double-sided optical polishing, precision laser profiling, and comprehensive spectrophotometric testing to meet stringent DIN/ISO industrial criteria.

CNC Micro-Grooved Slotted Quartz Plate Grooved Fused Silica Sheet Precision Custom Size

Slotted Quartz Plate Grooved Fused Silica Sheet Precision Custom Size

Engineered with sub-micron CNC slotted channels for microfluidic electrophoresis, high-temperature gas manifold assemblies, and marine research sensors.

Laser Machined Laser Cut Quartz Glass Plate Fused Silica Precision Custom Size

Laser Cut Quartz Glass Plate Fused Silica Precision Custom Size

Precision non-contact laser profiled plates with micro-crack-free perimeter edging, customized contour geometry, and high dimensional repeatability (±0.05 mm).

Optical Polished Quartz Plate 3mm 5mm 8mm Thickness High Purity Fused Silica Polished

Quartz Plate 3mm 5mm 8mm Thickness High Purity Fused Silica Polished

Standard thickness optical substrates finished to 40/20 or 60/40 scratch-dig, providing >92% transmission in UV-Vis spectrums for spectroscopic inspection windows.

Vacuum Rated Quartz Glass Plate for Vacuum Chamber Viewport High Purity Custom

Quartz Glass Plate for Vacuum Chamber Viewport High Purity Custom

High-pressure and ultra-high vacuum viewport sight discs with precision-ground sealing shoulders, compatible with ISO-KF, CF, and custom maritime flanges.

Chamfered Edge Square Quartz Plate Fused Silica Sheet Beveled Edge Polished Custom Size

Square Quartz Plate Fused Silica Sheet Beveled Edge Polished Custom Size

Safety-beveled corner finishes designed to relieve mechanical edge stresses during rapid thermal cycles and marine installation compression fittings.

UV Grade Laser Quartz Plate for Laser Protection Window Fused Silica UV Grade

Quartz Plate for Laser Protection Window Fused Silica UV Grade

High laser damage threshold (LDT) protective shields preventing optical degradation in industrial laser processing heads and photonic alignment stations.

1200°C Thermal Quartz Fireplace Viewing Glass Plate Heat Resistant Fused Silica

Quartz Fireplace Viewing Glass Plate Heat Resistant Fused Silica

Zero-expansion thermal shock shielding for architectural combustion chambers, ultra-luxury villa heating features, and coastal biomass kiln observation portals.

Clear Precision Cut Rectangular Quartz Plate Fused Silica Clear Precision Cut Custom Size

Rectangular Quartz Plate Fused Silica Clear Precision Cut Custom Size

High-purity quartz sheet cut to customer drawings with custom parallelism and flatness specifications for photochemical reactors and coastal water monitors.

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OD 2-500mm
Custom Machining Envelope
≤ 20ppm
Total Metallic Impurities
1,100°C
Continuous Working Temp
≤ 2hrs
Technical Engineering Reply
Technical Reference

Fused Silica vs. Natural Quartz Disc Specifications

Selecting optical sight discs for challenging coastal and industrial environments requires balancing UV cutoff wavelengths, thermal shock thresholds, and mechanical flexural endurance. The matrix below contrasts commercial soda-lime/borosilicate against VEZLO high-purity synthetic and electric-fused quartz glass.

Physical / Chemical Property Synthetic Fused Silica (JGS1) High-Purity Fused Quartz (JGS2) Optical Fused Quartz (JGS3 / IR) Significance for Herceg Novi Buyers
Primary Raw Material Base Silicon Tetrachloride (SiCl₄) Donghai Natural Crystal Sand Refined Quartz Crystal Controls structural micro-bubble density and trace ion purity.
Spectral Transmission Band 185 nm – 2,500 nm (Deep UV) 220 nm – 2,500 nm (UV-Vis) 260 nm – 3,500 nm (Near-to-Mid IR) Crucial for UV sterilization and photochemical ocean sensors.
SiO₂ Purity Content ≥ 99.999% (5N) ≥ 99.99% (4N) ≥ 99.98% Guarantees zero devitrification at continuous 1100°C exposure.
Coefficient of Thermal Expansion (CTE) 5.5 × 10⁻⁷ / °C (20°C–320°C) 5.5 × 10⁻⁷ / °C 5.4 × 10⁻⁷ / °C Survives immediate drop from 1100°C into cold Adriatic seawater.
Annealing Point / Softening Point 1140°C / 1730°C 1215°C / 1683°C 1200°C / 1670°C Maintains optical clarity in intense combustion viewing setups.
Acid Resistance Rating Class 1 (Inert to Marine Salt/Acids) Class 1 Class 1 Completely immune to coastal saline corrosion and acid vapors.
Refractive Index (nd, 589.3 nm) 1.4585 1.4585 1.4586 Optimized for beam-splitting, laser windows, and imaging sight glasses.
Targeted Regional Utility

Localized Engineering Applications in Herceg Novi & The Adriatic Corridor

Situated at the gateway of the Bay of Kotor (Boka Kotorska), Herceg Novi’s micro-climate, maritime logistics, and emerging technological clusters present specialized operational requirements for precision quartz components.

Subsea Viewports & Maritime Superyacht Equipment

With close proximity to major nautical refit hubs in the Bay of Kotor and Adriatic yachting corridors, VEZLO quartz discs serve as high-pressure sight windows for submersibles, underwater camera housings, and engine room exhaust gas scrubbers. The material’s imperviousness to saline-induced micro-pitting provides immense lifecycle advantages over borosilicate sight glasses.

Municipal & Ballast UV-C Water Sterilization

To preserve Boka Bay’s delicate marine ecosystem, local wastewater facilities and marine vessels install high-transmission (≥90% at 253.7 nm) fused quartz protective discs and sleeves. These optical barriers isolate high-output germicidal mercury amalgam and pulsed-xenon UV sources from pressurized ballast wastewater streams without solarization darkening.

Architectural Glazing for Luxury Coastal Residences

The architecture of coastal Montenegro demands heating aesthetics that withstand intense Mediterranean seasonal contrasts. VEZLO custom beveled quartz fireplace viewing plates endure direct 1000°C flame contact internally while maintaining structural integrity against ambient coastal air humidity, offering ultra-clear viewing without soot clouding or stress fracturing.

Marine Biology & Oceanographic Photometry

Environmental scientists along the southern Adriatic monitor seawater salinity, nitrate gradients, and microplastic contaminants using spectrophotometric analysis. Synthetic fused silica plates (JGS1) provide zero-background UV fluorescence and non-distorting planar accuracy (λ/4 flatness), essential for pristine analytical chromatography cells and laboratory cuvettes.

Solar Thermal Collectors & Coastal Renewable Energy

Montenegro’s aggressive green transition encourages high-efficiency solar thermal installations. Quartz discs provide high solar transmittance across visible and near-infrared wavelengths (300–2500 nm), serving as durable protective viewports and concentrating covers that endure high solar irradiance without thermal cracking or surface degradation.

Industrial Laser Processing & Protective Windows

Regional metal fabrication and maintenance workshops in the Herceg Novi-Kotor-Tivat triangle utilize fiber laser cutting and welding systems. VEZLO laser protection quartz windows, with anti-reflective (AR) coatings for 1064 nm or 532 nm, shield sensitive optics from spatter, thermal back-reflection, and mechanical particulate contamination.

Strategic Market Intelligence

Market Dynamics & Industrial Trends Across Montenegro & The Adriatic

Analyzing the economic and regulatory forces driving the adoption of high-performance quartz glass and optical fused silica materials throughout Montenegro and neighboring coastal territories.

1. Stricter Environmental Regulations along Boka Kotorska

As Montenegro aligns its regulatory frameworks with European Union environmental benchmarks (EU Water Framework Directive and IMO Ballast Water Management Convention), coastal municipal utilities and maritime operators are transitioning from chemical chlorination to deep-UV advanced oxidation processes (AOP). This transition accelerates demand for synthetic fused silica sleeves and viewport discs capable of high-flux 254 nm and 185 nm UV transmission.

2. Nautical Modernization & Coastal Luxury Infrastructure

The ongoing expansion of superyacht berths and five-star resort developments in Luštica Bay, Portonovi (Kumbor, Herceg Novi), and Porto Montenegro drives continuous requirement for bespoke technical glass. High-end marine architectural projects require fire-rated viewing plates and sub-surface illumination sight glasses that deliver zero optical distortion, ultra-high mechanical safety factors, and zero thermal degradation over decades of exposure to salty marine winds.

3. Lean Inventory Procurement & Direct-from-Factory Supply

Montenegrin engineering firms historically sourced quartz products via multi-tier intermediaries across Central Europe, resulting in inflated markups and 8 to 12-week lead times. Engineering directors now increasingly leverage direct-from-manufacturer partnerships with Chinese suppliers like VEZLO, securing certified OEM traceability, mill-test certifications, customized dimensional profiling, and competitive batch delivery directly via Adriatic freight hubs.

Procurement Advisory

Herceg Novi Procurement FAQ: Ordering, Customs & Technical Parameters

Actionable engineering and logistics guidance addressing the primary queries raised by procurement teams, maintenance directors, and technical specifiers in Montenegro.

FAQ 1 How do you handle shipping and customs clearance into Herceg Novi, Montenegro?
We provide full CIF and DDU/DAP solutions. Small-to-medium precision orders are shipped via DHL/FedEx Express directly to Tivat Airport (TIV) or Podgorica Airport (TGD), clearing customs within 3 to 5 business days. Heavy industrial consignments enter through the Port of Bar or the Port of Ploče/Dubrovnik (Croatia), followed by road transit directly to Herceg Novi. All export documentation includes verified Commercial Invoices, Packing Lists with HS Code 7002.31 / 7002.39, Certificate of Origin, and Mill Test Certificates to ensure straightforward clearance with Montenegrin Customs.
FAQ 2 What is the maximum operating pressure for quartz sight glass viewports in marine applications?
The allowable operating pressure of a quartz viewport depends upon the unsupported viewing diameter, disc thickness, clamping gasket configuration, and safety factor. Using the standard clamped circular plate formula (DIN 7080 standard), a 100 mm diameter fused silica disc with an 8 mm thickness offers a burst pressure well exceeding 40 bar, accommodating typical working pressures of 10 to 16 bar with a 4× to 5× marine safety factor. Our engineers calculate custom thickness-to-diameter ratios based on your operational depth or hydrostatic pressure needs.
FAQ 3 How does fused silica compare with borosilicate glass in marine coastal environments?
Borosilicate glass has a thermal expansion coefficient around 3.3 × 10⁻⁶/°C and a softening point of ~820°C, limiting continuous operation to 450°C. In contrast, fused silica has a near-zero CTE (5.5 × 10⁻⁷/°C) and operates continuously up to 1,100°C. Furthermore, fused silica offers superior resistance to solarization from high-intensity UV rays and total immunity to marine salt micro-etching, delivering indefinite optical transparency in coastal marine installations where borosilicate gradually suffers surface haze.
FAQ 4 Can VEZLO manufacture custom geometries, hole drillings, and beveled chamfers to drawing?
Yes. Our workshop is equipped with 4-axis CNC ultrasonic machining centers, multi-axis diamond saws, laser contour cutters, and double-sided planetary polishing equipment. We fabricate stepped shoulders, countersunk holes, high-aspect micro-slots, edge chamfers (0.5 mm to 3 mm at 45°), and precision ground perimeters to exact customer drawings with dimensional tolerances down to ±0.02 mm and edge chipping restricted to under 0.1 mm.
FAQ 5 What inspection standards and quality reports are supplied with each export delivery?
Every export shipment includes a comprehensive Quality Inspection Certificate containing optical transmission curves measured by Lambda spectrophotometers, mechanical dimension reports verified by optical coordinate measuring machines (CMM), surface roughness (Ra) profiles, and DIN 58927 / ISO 10110 bubble/inclusion classification ratings. Material batch composition reports verifying metallic impurities ≤20 ppm are provided on request.
FAQ 6 How are fragile quartz discs packaged to prevent damage during international transport?
Each quartz plate is cleaned, protected with dust-free electrostatic film or lens tissue, vacuum-sealed in moisture-barrier bags, and immobilized inside high-density pearl cotton (EPE) custom-cut inserts. Packaged assemblies are encased in rigid corrugated boxes and finally secured within fumigation-free export plywood cases reinforced with steel strapping and external shock/tilt monitoring indicators. We maintain a zero-breakage track record across long-distance European transit.
Enterprise Credentials

Why Engineering Teams Partner with VEZLO Quartz

Based in Donghai County—internationally recognized as China’s quartz capital—VEZLO Quartz combines natural resource supremacy with state-of-the-art quartz melting and precision finishing technologies.

Integrated Upstream Raw Purity

We melt directly from refined Donghai crystalline sand with total conventional metallic impurities ≤20 ppm, ensuring superior thermal stability and crystal-clear visual transmission without structural micro-voids.

Major Provincial & National R&D

Developers of the 320 mm high-purity quartz tube for integrated circuits (Jiangsu Science & Technology Support Project) and the 520 mm large-diameter furnace tube under national review, investing over RMB 5M in ongoing R&D yearly.

Verified Trade & Export Assurance

Onsite-verified manufacturer by international inspection bodies, supported by Alibaba Trade Assurance with transparent escrow protection, full legal audit records, and verified European export capabilities.

Rapid Technical Support (≤ 2 Hrs)

Dedicated English-speaking optical and mechanical engineers provide preliminary drawing reviews, feasibility checks, and transparent DDU/CIF quotations within an average response window of under two hours.

Request an Engineering Quotation for Herceg Novi Delivery

Submit your 2D/3D CAD drawings (PDF, DXF, DWG, STEP) along with your spectral requirements, operating temperatures, and mechanical tolerances. Our technical sales engineers will assess manufacturability and deliver a competitive factory-direct quote within 2 hours.