What sizes of fused quartz tube can VEZLO produce?

Standard transparent fused quartz tubes are produced from 2 mm to 500 mm outer diameter. A 520 mm large-diameter high-purity quartz tube has also been developed for semiconductor diffusion and oxidation furnaces. Wall thickness, length and end finishing are made to drawing.

What is the difference between fused quartz and fused silica?

Fused quartz is made by melting high-purity natural quartz crystal or sand, while synthetic fused silica is produced from silicon-based precursors such as SiCl4. Synthetic silica offers higher deep-UV transmission, while fused quartz provides excellent thermal stability and purity at a lower cost for lamps, furnaces, labware and most industrial uses.

What is an ozone-free quartz tube?

An ozone-free quartz tube is doped to absorb the 185 nm ultraviolet line that converts oxygen into ozone, while still transmitting the 254 nm germicidal wavelength. It is widely used for UV sterilization lamps in water, air and surface disinfection where ozone is not wanted.

Do you accept OEM and ODM custom quartz parts?

Yes. VEZLO manufactures to customer drawings, including tubes with closed or flared ends, ground joints, flanges, quartz boats, cleaning tanks, crucibles, plates, windows and rods, as well as private-label packaging.

How fast does VEZLO respond to technical requests?

The average response time is within 2 hours, and around 50% of buyers place repeat orders. Requirements can be sent to info@vezloquartz.com or via the contact page.

How are fragile quartz products packed for export?

Quartz parts are typically protected individually with foam or pearl cotton, then packed in reinforced cartons or fumigation-free plywood cases suitable for sea, air and express shipping.

Precision Fused Silica & Quartz Engineering

Optical Quartz Plate Manufacturer & Factory in Kuala Lumpur

Precision-ground optical windows, synthetic fused silica substrates, high-transmission flats, and semiconductor-grade quartzware engineered to MIL-PRF-13830B and ISO 10110 standards for high-tech manufacturing.

Direct Factory Portfolio

Precision Quartz Plates & Core Components

Manufactured from ultra-pure natural quartz crystal and synthetic silicon precursors. Surface flatness up to λ/10, scratch-dig 20-10, with operational stability exceeding 1,100°C.

Semiconductor Quartz Plate Fused Silica Substrate High Purity Custom

Total metallic impurities ≤20 ppm, CMP double-side polished with Ra <0.5 nm for wafer carriers, lithography masks, and sub-micron semiconductor processes.

Rectangular Quartz Plate Fused Silica Clear Precision Cut Custom Size

Custom CNC diamond edge chamfering, laser-cut profiling, dimensional tolerance within ±0.05 mm, optimal for UV curing windows and inline sight glass.

Quartz Optical Flat Plate Fused Silica High Flatness Polished Custom

Optical reference flats with surface figure λ/10 to λ/20 at 632.8 nm, parallelism <5 arcsec, engineered for laser interferometry and optical inspection stages.

Quartz Tube for Ozone Generator High Purity Fused Silica Ozone Free

Precision titanium-doped fused quartz engineered to cut 185 nm line emissions while transmitting 254 nm germicidal radiation for water and cleanroom treatment systems.

Large Diameter Clear Quartz Borosilicate Glass Tube round Fused Silica

Outer diameter capacity up to 520 mm with uniform wall control, formulated for high-vacuum diffusion chambers, CVD process reaction tubes, and torch welding.

Quartz Fireplace Viewing Glass Plate Heat Resistant Fused Silica

Withstands thermal gradients from 1,100°C to cold liquid immersion without cracking; thermal expansion coefficient 5.5 × 10⁻⁷ /°C for industrial kiln viewing.

Quartz Plate for Laboratory Fused Silica Clear Heat Resistant Custom

Chemical inertness to severe acids (except HF), high UV transmission in the 200–400 nm band, custom slotted for spectrometry and analytical biochemistry apparatus.

Quartz Disc with Groove Fused Silica Plate Clear Polished Custom Size

Micro-machined sealing grooves, step-boring, and o-ring recesses CNC ground into high-flatness discs for vacuum flange observation and laser chamber enclosures.

≥ 99.99%

Pure SiO₂ Matrix Purity (JGS1 / JGS2 / JGS3)

± 0.005 mm

Precision CNC Cold Machining Tolerance

≤ 2 Hours

Engineering Response Time for KL Technical RFQs

50%

Direct Repeat Order Rate in Advanced Manufacturing

Material Science Reference

Fused Silica vs. Natural Fused Quartz: Optical Grade Classifications

A rigorous comparative analysis for optical designers, process integration engineers, and procurement managers in the Greater Kuala Lumpur high-technology corridor.

Selecting the appropriate amorphous silica substrate requires a thorough understanding of deep ultraviolet (DUV) spectral cutoff points, hydroxyl (OH⁻) absorption bands in the near-infrared (NIR), and micro-bubble classifications. In high-precision optoelectronic devices and laser cutting assembly plants across Selangor and Kuala Lumpur, material failure frequently traces back to thermal-stress devitrification or photochemical solarization caused by selecting improper quartz glass grades.

Grade Category	Material Precursor	Transmission Band	Typical OH Content	Primary Industrial Use-Case
JGS1 (Synthetic Silica)	High-purity SiCl₄ chemical synthesis	185 nm – 2,500 nm (DUV / UV)	< 1,200 ppm (or <10 ppm for low-OH)	Excimer laser optics, semiconductor lithography masks, UV spectrophotometry
JGS2 (Optical Fused Quartz)	Refined natural crystal melting (H₂/O₂)	220 nm – 2,500 nm (Visible / VIS)	< 150 – 200 ppm	Optical sight glasses, high-pressure discharge lamps, analytical instrument stages
JGS3 (Infrared Fused Silica)	Electrically melted natural crystal	260 nm – 3,500 nm (NIR / IR)	< 5 ppm (Water-free)	CO₂ laser windows, thermal imaging viewports, pyrometric furnace observation
Semiconductor Clear Tube	High-purity Donghai quartz sand	280 nm – 2,500 nm (Thermal)	< 30 ppm	Diffusion furnace liners, LPCVD process reactors, thermal oxidation carriers

Design Note for KL Optical Engineers: For high-power UV laser irradiation (e.g., 248 nm KrF or 193 nm ArF excimer systems), JGS1 grade eliminates fluorescence and solarization induced by trapped transition metal cations (Fe, Ti, Cr). For high-temperature diffusion tube furnaces running up to 1,200°C in cleanrooms, lower OH⁻ electrically fused quartz is mandatory to avoid structural sagging and early bubble nucleations.

Regional Integration

Precision Quartz Applications in the Greater KL Industrial Ecosystem

Serving advanced assembly, test, and photonics facilities across Shah Alam, Petaling Jaya, Cyberjaya, Bangi, and the broader Selangor industrial landscape.

Semiconductor OSAT & Advanced Packaging

Malaysia accounts for approximately 13% of the world's backend semiconductor assembly and testing. In the automated packaging corridors of Klang Valley and Petaling Jaya, our ultra-flat quartz plates act as rigid, transparent wafer carriers for temporary bonding and de-bonding (TBDB) workflows, laser lift-off (LLO) carrier substrates, and chemical-mechanical planarization (CMP) conditioning retainers.

Wafer Support • Thin-Die Carriers

Industrial Laser Cutting & Photonics Machinery

The manufacturing belts of Shah Alam and Subang rely heavily on multi-kilowatt fiber and UV solid-state laser cutting equipment for sheet metal, precision electronics, and medical device fabrication. Our anti-reflective (AR) coated fused silica debris shields and protective laser windows feature high bulk laser damage thresholds (>10 J/cm² at 1064 nm, 10 ns) to safeguard sensitive focusing optics from molten spatter and thermal distortion.

Laser Windows • AR Shielding

University & Public Research Metrology

Kuala Lumpur hosts premier academic and national scientific hubs, including Universiti Malaya (UM), Universiti Kebangsaan Malaysia (UKM), and SIRIM Berhad. We supply custom quartz optical flats, UV spectroscopy micro-cuvettes, and vacuum reaction chambers with ground quartz joints for cutting-edge investigations in nanotechnology, green energy catalysts, and microfluidics.

SIRIM Standards • High-Vacuum Flanges

Strategic Industry Horizon

Emerging Trends Driving Optical Quartz Demand in Malaysia

Aligning with the National Semiconductor Strategy (NSS) and the New Industrial Master Plan (NIMP 2030).

Shift from OSAT to Front-End Wafer Fabrication

Malaysia is aggressively positioning itself to capture front-end wafer fabrication facilities and specialized compound semiconductor lines (SiC, GaN). This transition demands process quartzware of extreme chemical purity: diffusion tubes exceeding 500 mm OD, high-capacity wafer boats, and ultra-flat furnace baffles resistant to corrosive dopant atmospheres.

Front-End Semiconductor Evolution

Expansion of Solar PV & Green Energy Equipment

As Southeast Asia deepens its renewable manufacturing supply chain, solar cell and ingot manufacturing plants across Selangor and neighboring logistics hubs are upgrading to higher-efficiency n-type TOPCon and heterojunction (HJT) architectures. These plants require heavy-duty quartz crucibles and thermal quartz tubes that survive continuous runs at 1,450°C without crystalline restructuring.

Photovoltaic Thermal Infrastructure

Stringent Cleanroom Contamination Protocols

Modern micro-optics and medical diagnostic devices assembled in Kuala Lumpur cleanrooms require suppliers to guarantee low-outgassing, chemical residue-free, and particulate-controlled components. Fused silica has emerged as the premier replacement for borosilicate and technical ceramics due to its zero-porosity surface and zero trace metal leaching.

Zero-Outgassing Purity

Rapid Sourcing Integration via Port Klang & KLIA

Global supply chain diversification favors agile manufacturers who provide engineering validation, quick turnaround on customized drawings, and air-freight options into Kuala Lumpur International Airport (KLIA) or ocean consolidations through Port Klang (Westports/Northport). Real-time technical support eliminates costly downtime for local plant operators.

Direct Regional Logistics

Manufacturing Excellence

Why Tier-1 Engineers Source Optical Quartz from VEZLO

Combining world-class mineral deposits in Donghai with multi-axis CNC cold processing and high-temperature flame fabrication.

Raw Mineral Dominance (Donghai Cluster)

Situated within China's recognized "Quartz Capital" across a 33,000 m² operating facility, our production chain starts from ultra-pure silica deposits yielding total metal impurities ≤20 ppm across 13 proprietary sand grades. This raw material purity prevents structural micro-inclusions, striae, and seed bubbles at the source.

≤20 ppm Metallic Purity

National & Provincial Science Recognition

Our 320 mm high-purity quartz tube for ultra-large-scale integrated circuit processing was selected as a prestigious Jiangsu Provincial Science & Technology Support Project. Furthermore, our 520 mm large-diameter tube passed national new product reviews, proving our technological standing in 12-inch and 14-inch wafer furnace components.

Provincial Science Award Winner

Full-Spectrum CNC Cold & Hot Processing

We do not simply draw standard shapes; we machine high-complexity components to drawing. Capabilities include ultrasonic micro-drilling, surface double-sided planetary polishing (CMP), CNC step milling, edge profiling, slotting, precision optical coating, and artisan lathe torch welding of custom quartz instruments.

Complex Custom Fabrication

Metrology-Backed Quality Assurance

Every optical plate and substrate order is verified with laser interferometers (Zygo), spectrophotometers measuring transmission from 190 nm to 3,200 nm, coordinate measuring machines (CMM), and optical polariscopes to verify stress birefringence ≤5 nm/cm, ensuring absolute compliance before packing.

Zygo Verified Flatness

Engineered Cleanroom Packaging

Fragile optical elements are cleaned via multi-stage ultrasonic deionized water cascades, vacuum-sealed in static-shielding film inside Class 100/1000 cleanrooms, and packed into shock-absorbing, multi-layer pearl cotton cases with integrated tilt/drop indicators for international export safety.

Zero-Chipping Transit Guarantee

Direct Engineering Consultation

No non-technical intermediaries. Technical inquiries from Kuala Lumpur, Bayan Lepas, or Johor are evaluated directly by materials scientists and optical production technicians, providing initial feasibility checks and DFM (Design for Manufacturability) advice within 2 hours.

≤2 Hour Rapid Assessment

Procurement Guide

Frequently Asked Questions by Malaysian Sourcing & Engineering Teams

Key technical, commercial, and logistics considerations for importing optical quartz plates and custom parts into Kuala Lumpur and Selangor.

What are the lead times and shipping routes for custom optical quartz plates to Kuala Lumpur?

Standard prototype orders and custom-cut quartz plates typically require 7 to 12 working days for fabrication, CNC precision grinding, and polishing. For urgent engineering line-down situations in Klang Valley or Penang, we utilize express air freight directly from Lianyungang/Shanghai to Kuala Lumpur International Airport (KLIA Cargo Village) with transit times of 3 to 4 business days. Bulk quartz tubes and heavy crucible consignments ship via ocean consolidation directly to Port Klang (Pelabuhan Klang - Northport/Westports), with a marine transit duration of roughly 10 to 14 days.

How do you ensure optical quartz surfaces do not degrade in Malaysia's tropical humidity during storage?

Kuala Lumpur experiences high ambient relative humidity (frequently exceeding 80%). While fused quartz and synthetic fused silica possess outstanding chemical stability compared to borosilicate or crown optical glasses, sustained moisture in non-controlled conditions can trap contaminants and promote surface hazing. To counter this, all our optical quartz plates undergo an ultrasonic DI water wash, cleanroom bake-out, and are sealed in moisture-barrier bags with industrial desiccant packets and non-reactive lens tissue before entering reinforced shipping cartons.

What documentation and certifications are supplied with semiconductor-grade quartzware?

Every precision batch dispatched to Malaysian high-tech customers includes a Certificate of Conformance (CoC), material spectral transmission data curves (spectrophotometer scan), Zygo interferometric surface flatness test reports (for λ/4, λ/10 flats), and dimensional CMM inspection reports. For wafer fab clients, we provide ICP-MS trace metal impurity analyses confirming compliance with micro-impurity benchmarks (≤20 ppm total metal cations).

What HS codes and tax considerations apply when clearing quartz plates through Royal Malaysian Customs?

Optical quartz plates, fused silica substrates, and polished quartz windows typically clear under HS Code 7006.00 (glass of heading 70.03, 70.04 or 70.05, bent, edge-worked, engraved, drilled, enamelled or otherwise worked) or HS Code 7002.32 (tubes of other glass having a linear coefficient of expansion not exceeding 5 × 10⁻⁶ per Kelvin). Under the ASEAN-China Free Trade Agreement (ACFTA), Malaysian buyers can leverage Form E documentation to qualify for preferential or zero-rate import duties, with standard Malaysian Sales and Service Tax (SST) applied according to prevailing Royal Malaysian Customs Department guidelines.

Can you manufacture custom quartz parts directly from CAD drawings (STEP, DXF, DWG)?

Yes. We regularly accept engineering CAD models in 3D STEP/IGES and 2D DXF/PDF formats. Our engineering team reviews the requested tolerances, edge chamfers, surface roughness (Ra), and scratch-dig standards (e.g., MIL-PRF-13830B or ISO 10110). If certain features present micro-fracture risks during CNC ultrasonic processing, we offer DFM recommendations to optimize yields and lower production costs before cutting begins.

What is the difference in operational lifetime between fused quartz and synthetic silica in UV curing lines?

In standard 365 nm / 395 nm LED UV curing setups commonly deployed in Selangor electronics assembly factories, optical fused quartz (JGS2) delivers exceptional durability with negligible loss of transparency over thousands of operational hours. However, in short-wave DUV systems operating below 250 nm (or high-power mercury arc lamps), standard fused quartz will gradually solarize (darken) due to trace iron and titanium impurities. In such environments, synthetic fused silica (JGS1) is required to sustain transmittance above 90% without photo-induced discoloration.

Request a Technical Quotation for Your Quartz Project

Consult with our quartz engineering specialists. Send your technical drawings, dimensional tolerances, and operating specifications for an immediate feasibility evaluation and formal quotation within 2 hours.