Precision Quartzware Catalog
High-Performance Fused Quartz Products
Direct supply of certified fused quartz tubes, discs, plates, boats, and laboratory glassware manufactured with high-purity natural silica sand.
High Purity 99.999% Single Crystal Quartz Glass Tube Flange
SJ 140 High Purity Precision Polished Quartz Boat
SJ QUARTZ Custom Flow Splitting Bottle
XRD Quartz Holder Test Samples High Transmittance Clear Plate
High Purity Quartz Transparent Polished Glass Tube
High Purity Transparent Quartz Glass Lab Flask
Semiconductor Grade High Purity Quartz Separating Container
Local Ecosystem Integration
Fused Quartz Disc Solutions for George Town’s Advanced Industries
As the cornerstone of Malaysia’s "Silicon Island," George Town and the greater Penang industrial corridor (spanning Bayan Lepas Free Industrial Zone, Batu Kawan Industrial Park, and Seberang Perai) represent one of the world's densest electronics assembly, semiconductor packaging, and wafer fabrication ecosystems. Lianyungang Vulra Quartz Products Co., Ltd. provides direct OEM/ODM engineering support, supplying ultra-high purity fused quartz discs, optical sight glasses, and fused silica substrate plates engineered to withstand the rigorous demands of Penang's advanced manufacturing infrastructure.
In high-tech manufacturing, component failure leads to catastrophic line downtime. Standard borosilicate glass or low-grade glass substrates deform under intense thermal loads and react aggressively when exposed to fluorinated etching plasmas. Our fused quartz discs are fabricated from 99.99%+ pure natural quartz crystal sand, featuring an exceptionally low coefficient of thermal expansion ($5.5 \times 10^{-7} / ^\circ\text{C}$) and continuous working temperature limits exceeding 1100°C. These physical characteristics make our discs the primary component of choice for engineering teams across George Town.
Key Takeaway for Penang Engineers: Vulra Quartz provides localized technical sourcing for fused quartz discs featuring double-sided optical polishing (Surface Quality 40/20 or 20/10 Scratch-Dig), near-zero bubble inclusion (Class 0/I per DIN 58927), and precise dimensional tolerances within $\pm0.02\text{ mm}$ for direct replacement in automated semiconductor handling systems.
Semiconductor Wafer Packaging & Plasma Etch
Utilized as heat shields, dielectric support plates, and inspection windows in plasma-enhanced chemical vapor deposition (PECVD) and reactive ion etching (RIE) equipment deployed across Bayan Lepas semiconductor fabs.
Photonics & UV-C Optical Inspection
With spectral transmittance exceeding 90% in the deep ultraviolet (DUV) range down to 220 nm, our synthetic and optical-grade quartz discs serve as protective lenses and beam splitters in Penang's optical sensor factories.
Solar Cell & Photovoltaic Manufacturing
Custom-sized large-diameter quartz discs act as thermal baffles and carrier plates in high-temperature diffusion furnaces producing high-efficiency TOPCon and heterojunction (HJT) solar cells.
Academic & Industrial R&D at USM
Supporting advanced material synthesis, XRD analysis, and photo-electrochemical cell testing at Universiti Sains Malaysia (USM) and private R&D laboratories requiring inert optical quartz windows.
Information Gain Whitepaper
Material Science & Physical Properties of Vulra Fused Quartz Discs
Engineering transparency for procurement teams: understanding the chemical, thermal, and optical parameters of natural fused quartz versus synthetic fused silica.
When selecting a fused quartz disc manufacturer for George Town operations, material selection must directly align with process chemistry and operating temperature profiles. Fused quartz is produced by melting ultra-clean natural quartz crystals in electric resistance or gas-oxygen furnaces. The result is a glass matrix characterized by zero porosity, extreme dielectric strength, and high resistance to chemical attack by acids (with the exception of hydrofluoric acid and concentrated phosphoric acid at elevated temperatures).
| Physical / Chemical Property | JGS1 (Synthetic Fused Silica) | JGS2 (Clear Fused Quartz) | JGS3 (Opaque/Infrared Quartz) |
|---|---|---|---|
| Primary Raw Material | Silicon Tetrachloride ($\text{SiCl}_4$) Synthesis | High-Purity Natural Quartz Sand | Purified Natural Silica Sand |
| SiO₂ Purity Grade | >99.9999% | 99.99% - 99.999% | 99.98% |
| Spectral Spectrum Focus | Deep UV & Visible (190 nm - 2500 nm) | Visible & Near-IR (220 nm - 2700 nm) | Infrared Thermal Shielding (2600 nm+) |
| Hydroxyl Content (OH-) | < 5 ppm (Dry) to 1000 ppm (Wet) | < 30 ppm - 150 ppm | < 5 ppm |
| Max Thermal Shock Limit | 1100°C to 20°C Water Quench | 1000°C to 20°C Water Quench | 900°C to 20°C Water Quench |
| Typical Local Applications | Photolithography, UV Lenses, Laser Windows | Furnace Sight Glasses, Wafer Carriers | Thermal Baffles, IR Heater Plates |
Precision Cold Machining & Surface Finishing Capabilities
At our manufacturing plant in the Jiangsu Donghai Economic Development Zone, Vulra Quartz employs multi-axis CNC glass grinding centers, flat double-sided polishing systems, and laser cutting equipment. This allows us to supply George Town clients with custom fused quartz discs engineered to precise CAD specifications:
- Dimensional Outer Diameter (OD): Standard range from $\varnothing5\text{ mm}$ up to $\varnothing800\text{ mm}$ with tolerances up to $\pm0.01\text{ mm}$.
- Disc Thickness Range: Ultra-thin wafers ($0.5\text{ mm}$) to heavy-duty pressure vessel sight glasses ($50\text{ mm}$).
- Edge Finishing: Fire-polished, chamfered (bevel 0.5mm x 45°), ground flat, or step-lapped for seal gasket seats.
- Optical Polish & Flatness: Optical surface roughness $Ra < 0.5\text{ nm}$, surface flatness up to $\lambda/4$ per 25mm diameter.
Regional Growth Dynamics
Localized High-Tech Manufacturing Trends in George Town & Penang
How the expansion of Penang's semiconductor and green technology hubs is reshaping raw material quality requirements.
Advanced IC Packaging & Substrate Shift
With major global OSAT (Outsourced Semiconductor Assembly and Test) vendors expanding facilities in Batu Kawan, there is an accelerating demand for zero-expansion quartz carrier discs capable of maintaining planarity during high-temp flip-chip reflow.
Localization of Optical & Sensor Assembly
George Town’s photonics cluster is pushing optical component suppliers toward tighter tolerances. Buyers now demand strict certification on bubble class, inclusion limits, and spectral transmittance verification reports for every shipment batch.
Supply Chain Resilience & Fast Prototypes
To avoid single-source reliance and long European lead times, Malaysian tech firms are building direct partnerships with verified manufacturers offering drawing-based OEM samples from 1 piece with fast air-express delivery.
Why Source Direct from Vulra Quartz (Donghai Factory)?
Lianyungang Vulra Quartz Products Co., Ltd. is an on-site verified manufacturer by TÜV Rheinland. Located in Donghai County—the world’s primary crystal sand hub—we integrate raw crystal processing, flame lathe working, CNC cold grinding, vacuum annealing, and cleanroom acid washing under one roof.
Purchasing Guidance
Frequently Asked Questions by George Town Procurement Engineers
Clear engineering and logistical responses tailored to Malaysian semiconductor, photovoltaic, and laboratory buyers.
What shipping options and lead times are available for fused quartz discs to Penang/George Town?
We offer multiple express air freight options (DHL, FedEx, UPS) directly to Penang International Airport (PEN) or factory drop-shipments to Bayan Lepas and Batu Kawan Industrial Parks, typically arriving within 3 to 5 business days after production. For high-volume production runs, sea freight shipping via Penang Port (Butterworth) is available. Standard manufacturing lead time for custom CNC machined discs ranges from 7 to 12 days depending on polish requirements.
Can Vulra Quartz fabricate custom-shaped quartz discs with drilled holes and step bevels?
Yes. We specialize in custom cold machining based on your 2D/3D CAD drawings (DWG, DXF, STEP, PDF). Our capabilities include ultra-sonic drilling for chip-free micro holes, CNC step-lapping for O-ring sealing grooves, edge chamfering, and customized optical window cutouts.
How does your fused quartz withstand severe thermal shock in high-temperature processes?
Fused quartz possesses an extremely low coefficient of thermal expansion ($5.5 \times 10^{-7} / ^\circ\text{C}$). A standard Vulra quartz disc can be heated to 1100°C and plunged directly into 20°C cold water without fracturing or cracking. Furthermore, all our custom machined discs undergo thermal stress-relief annealing in computer-controlled electric furnaces to remove residual mechanical stress.
What chemical exposure limitations apply to fused quartz discs in wet etching baths?
Fused quartz exhibits total chemical inertness to virtually all acids—including hydrochloric, nitric, sulfuric, and aqua regia—at room and elevated temperatures. However, hydrofluoric acid (HF) and phosphoric acid ($\text{H}_3\text{PO}_4$) above 150°C will attack quartz glass. For HF etching environments, we can advise on specialized synthetic silica grades or surface treatments.
What is the minimum order quantity (MOQ) for prototype quartz disc testing?
We support R&D innovation and pilot-line validation by offering an MOQ starting from just 1 piece for custom quartz discs, plates, boats, and laboratory glassware. Once the design is validated in your George Town facility, we scale seamlessly to volume production batches.
How are fragile optical quartz discs packaged to prevent transit damage?
Every optical disc is double-cleaned, protected with dust-free lens tissue or protective film, sealed in vacuum bags, and fitted inside individual custom-cut high-density EVA foam trays. The inner boxes are packed within multi-layer corrugated master cartons or custom export wooden cases to guarantee zero breakage during air and sea freight.
Ready to Source High-Purity Fused Quartz Discs for George Town?
Send your engineering drawing or specifications directly to our senior technical team for a fast engineering feasibility review and competitive quote within 24 hours.