Featured High-Purity Quartz Glass Products
Direct Factory Supply with Precision CNC Machining, Custom Optical Polishing, and ISO 9001 Certified Quality Control
Clear Fused-Quartz Melting Crucibles
Fire-polished rims for high-temperature laboratory muffle furnaces. Superior resistance to thermal shock up to 1450°C.
High Purity Opaque Quartz Plate
Milky white fused silica sheet slab engineered for thermal insulation and infrared radiant heat diffusion in furnace linings.
High-Temp Circular Quartz Discs
Custom size thermal resistant circular quartz plates for semiconductor process chambers and high-temp sight glass windows.
Clear Quartz Laboratory Beakers
Acid-resistant fused quartz labware featuring molded pouring spouts designed for aggressive chemical processing and thermal testing.
99.99% Pure Quartz Twin Tube
Ozone-free customized twin-tube quartz structures for chemical processing, IR heating modules, and UV disinfection setups.
High Purity Optical Quartz Rod
Solid optical-grade clear fused quartz rods for laser light guides, semiconductor wafer handling tools, and fiber optic preforms.
Clear Quartz Combustion Vessels
Engineered with integrated pull rings for high-temperature analytical tube furnaces and precision material pyrolyrolysis.
4-Inch US Quartz Sand Crucibles
High-purity raw quartz sand crucibles tailored for silicon ingot melting, semiconductor crystal growth, and metallurgy.
Industry Whitepaper: Precision Quartz Glass Discs in Modern High-Tech Manufacturing
In high-tech manufacturing, selecting the appropriate optical substrate is crucial for process stability, yields, and optical transmittance. High-purity fused quartz glass discs (synthesized or melted from natural quartz crystals) serve as essential components in semiconductor fabrication, vacuum equipment, optical sensors, and analytical instruments. For advanced engineering firms in Singapore, securing a direct OEM/ODM supply chain ensures precise physical dimensions, exceptional purity control, and reduced total cost of ownership.
Fused quartz exhibits an extremely low coefficient of thermal expansion (5.5 × 10⁻⁷ /°C), rendering it virtually immune to thermal shock. Unlike standard borosilicate or soda-lime glass, a high-purity quartz glass disc can withstand abrupt temperature transitions from 1100°C to room temperature without structural fractures or mechanical micro-cracks. Furthermore, its chemical inertness against harsh acids—including Hydrochloric (HCl), Nitric (HNO₃), and Sulfuric (H₂SO₄) acids at elevated temperatures—makes quartz discs indispensable in corrosive chemical vapor deposition (CVD) environments and microfluidic research.
Core Material Performance Characteristics:
- Optical Transmission Range: High transmission efficiency spanning from Deep Ultraviolet (DUV at 193 nm) through Visible to Near-Infrared (NIR up to 3500 nm).
- Extreme Thermal Limit: Softening point reaching approximately 1683°C, with continuous operational stability at 1100°C and short-term thermal peak endurance up to 1450°C.
- Dielectric Insulation: Exceptional electrical insulation characteristics with near-zero dielectric loss, ideal for RF plasma reactors and microwave processing chambers.
- Structural Micro-Hardness: High mechanical rigidity (Mohs hardness ~7) allowing precise double-sided planetary polishing to surface roughness Ra < 0.5 nm.
Targeted Applications in Singapore's Industrial Ecosystem
Tailored Quartz Component Solutions Supporting Singapore's Advanced Manufacturing Corridors
Semiconductor Wafer Fabs (Woodlands & Tampines)
Custom quartz sight glasses, carrier discs, and chamber viewports designed for 200mm and 300mm wafer etch systems, plasma deposition tools, and rapid thermal processing (RTP) equipment operating across Woodlands, Tampines, and Pasir Ris fabrication parks.
Photonics & Optics R&D (A*STAR & Universities)
Super-polished JGS1 synthetic fused silica optical flats, beam splitter substrates, and laser windows engineered for advanced optical testing, quantum computing experiments, and nanophotonics development at A*STAR IME, NUS, and NTU research facilities.
Biomedical & Medical Devices (Tuas Biomedical Park)
Biocompatible, ultra-clean microfluidic quartz substrates, sight windows, and ultraviolet spectrophotometer cuvette discs tailored for life science diagnostic tools, medical laser devices, and pharmaceutical synthesis reactors in Tuas.
Environmental & Water Testing Labs
Heavy-duty, acid-resistant quartz digestion vessels, cover discs, and high-purity optical sight glasses utilized in public and private environmental analytical laboratories across Singapore for TOC and metal trace analysis.
Industrial UV Curing & Printing Systems
High-transmittance quartz filter plates and thermal protection discs for high-power UV LED curing systems, PCB photo-lithography exposure machines, and specialized industrial printing lines.
Precision Vacuum & Coating Viewports
Custom edge-beveled quartz viewports with CF/KF flange assemblies for ultra-high vacuum (UHV) thin-film sputtering equipment, physical vapor deposition (PVD) tools, and optical coating plants.
Technical Specification & Material Matrix
Comparison of Quartz Grades (JGS1, JGS2, JGS3) to Guide Engineering Selection
| Material Grade | Primary Optical Range | SiO2 Purity | Typical Applications | Bubble / Inclusions Standard |
|---|---|---|---|---|
| JGS1 (Synthetic Fused Silica) | Deep UV to Visible (190 nm – 1100 nm) | ≥ 99.999% | Laser windows, DUV photolithography, precision optics | Class 0 / Bubble-Free |
| JGS2 (Fused Quartz from Crystal) | UV to Near IR (220 nm – 2500 nm) | ≥ 99.99% | Semiconductor viewports, furnace plates, labware | ISO 12123 / DIN 58927 Compliant |
| JGS3 (Infrared Fused Silica) | Visible to Far IR (260 nm – 3500 nm) | ≥ 99.99% | IR heating viewports, thermal sensor covers, IR optics | High density homogeneity |
| Opaque / Milky Quartz | Infrared Diffusion & Heat Shielding | ≥ 99.9% | Furnace insulation discs, heat reflectors, flanges | Uniform micro-porous structure |
Donghai Kemzo Quartz Products Co., Ltd. - Manufacturing Capabilities
Located in Donghai County, Lianyungang, Jiangsu—renowned globally as China’s premier crystal and quartz processing hub—Donghai Kemzo Quartz Products Co., Ltd. has been a trusted manufacturer and direct exporter of premium quartz glass components since 2011. Operating under certified ISO 9001 quality management standards and recognized as a Jiangsu High Technology Enterprise, we provide end-to-end OEM and ODM fabrication services tailored to international engineering drawings.
Our integrated facility houses over 10 automated drawing lines, multi-axis CNC ultrasonic glass machining centers, double-sided planetary polishing tools, precision laser cutting devices, and hydrogen-oxygen flame working stations. We manage every step of production internally: from raw natural quartz sand washing and electrical arc melting to micro-scale machining, stress-relief annealing, cleanroom double-bag packaging, and quality certification.
Precision CNC Machining
Tolerance control within ±0.01 mm for diameter, thickness, counter-bores, step holes, notch alignment, and custom edge chamfering (C-chamfer or radius R-edge).
Double-Side Planetary Polishing
Achieving optical-grade surface roughness Ra < 0.5 nm, parallelism < 5 arc seconds, and surface flatness λ/10 per inch for high-demanding laser optics.
Thermal Stress Annealing
Computer-controlled annealing furnaces ensure complete relief of internal mechanical stress, preventing distortion under rapid cycling in high-temp vacuum furnaces.
Singapore Market Procurement Trends & Dynamics
Adapting Supply Chains to Support Singapore's Industry 4.0 and Smart Nation Goals
Singapore continues to solidify its position as Southeast Asia's primary semiconductor hub and advanced biomedical capital. With major global chipmakers expanding wafer fab capacity across the island, procurement officers and supply chain directors face increasing pressure to balance component reliability with cost-efficiency. Sourcing precision quartz glass discs directly from specialized manufacturers in China offers significant advantages over intermediary trading houses:
- Direct Factory Lead Times: Rapid prototype turnaround within 5–7 business days, with air-freight express delivery directly to Singapore’s Changi Logistics Center within 48 hours of dispatch.
- Cleanroom Packaging Standards: Class 10,000 cleanroom cleaning, ultrasonic deionized water rinsing, and vacuum double-bag sealing prevent particulate contamination before components enter Singapore fab cleanrooms.
- Cost Optimization: Eliminating distributor markups yields 25% to 40% cost savings without compromising raw material purity or physical tolerances.
- Custom OEM Drawing Support: Direct communication with our technical engineering team ensures rapid CAD review, material grade verification, and DFM (Design for Manufacturability) guidance.
Frequently Asked Questions (Singapore Procurement)
Key Commercial, Technical, and Logistics Insights for Singaporean Engineers and Buyers
What dimensional tolerances and surface finishes can your factory achieve for quartz discs?
For standard ground quartz discs, our tolerance is ±0.05 mm. For high-precision optical quartz plates or semiconductor-grade wafers, our multi-axis CNC machines and double-sided polishing equipment achieve outer diameter tolerances of ±0.01 mm, thickness tolerances down to ±0.005 mm, surface flatness of λ/10, and surface roughness Ra < 0.5 nm.
How do you ship fragile quartz glass discs safely to Singapore?
Every quartz disc undergoes ultrasonic cleaning and is individually wrapped in protective PE foam film. High-precision optical discs are vacuum-sealed in cleanroom double bags. Items are packed in custom die-cut foam inserts within shock-resistant multi-wall cartons and reinforced export wooden crates. We regularly ship to Singapore via air freight (Changi Cargo Complex) and ocean freight (Pasir Panjang Terminal) with 100% transit insurance coverage.
What is the difference between JGS1, JGS2, and JGS3 quartz glass disc materials?
JGS1 is synthetic fused silica with near-zero bubble content and superior transmittance in the Deep UV spectrum (190–1100 nm), ideal for laser optics. JGS2 is melted from high-purity natural quartz crystal, offering excellent thermal properties and transmission from 220–2500 nm (suitable for semiconductor viewports and furnace plates). JGS3 is infrared fused silica optimized for IR transmission up to 3500 nm.
Can you manufacture custom step discs, holes, or beveled edges based on our technical drawings?
Yes. Over 70% of our production is fully customized (OEM/ODM). We accept engineering drawings in PDF, DWG, DXF, or STEP formats. We routinely machine complex geometries including step-profile discs, countersunk holes, laser-etched alignment orientation notches, and custom edge chamfers.
What payment terms, currencies, and Incoterms do you support for Singapore buyers?
We support multiple flexible payment methods including T/T (Bank Transfer), L/C at sight, and PayPal. Transactions are accepted in USD, SGD, EUR, or CNY. Common shipping terms offered include EXW, FOB (Shanghai/Qingdao), CIF (Singapore Port), and DDP/DDU door-to-door express delivery directly to your facility in Singapore.
Do your products comply with Singapore environmental and industrial regulations?
Yes. All raw quartz materials and processing chemicals used in our facility comply with RoHS, REACH, and ISO 9001 quality management guidelines. We provide Material Inspection Certificates (COA), surface roughness test reports, and spectral transmittance curves upon request.
Need Custom OEM Quartz Discs for Your Project in Singapore?
Send us your engineering drawings, required material grade, dimensions, and quantity. Our technical team will review your specifications and provide a competitive factory-direct quote within 1 hour.