Precision hot-worked and cold-machined fused silica components crafted with ≥99.99% SiO₂ purity, delivering structural resilience and thermal stability up to 1450°C.
Precision-machined natural translucent quartz flat plates tailored for severe thermal arc-welding insulation and high-heat industrial containment setups.
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Doped ozone-free single-closed quartz tube configurations engineered for protective thermocouple sheaths and vertical heating furnaces.
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Specialized BET adsorption analysis geometry exhibiting zero gas degassing and micro-bore dimensional tolerance for analytical lab metrology.
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Ultra-high-purity jacketed cooling and acid-gas distribution manifolds built to eliminate process fluid cross-contamination in aggressive reactions.
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Dual-channel twin quartz emitters structured for mid-wave infrared emitter manufacturing, providing exceptional linear rigidity and mechanical resistance.
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Custom spiral-wound and serpentine quartz heating loops optimizing radiant heat transfer density across compact thermal curing compartments.
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Heavy-duty molten silicon and precious alloy melting vessels with high devitrification resistance for clean vacuum furnace crucible smelting operations.
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Ultra-flat infrared and UV-transmissive quartz sight plates with minimal bubble inclusion, providing distortion-free transmission across 260nm–2500nm spectra.
View DetailsDriving yield optimization and thermal stability across southern Vietnam's core export processing corridors and high-tech manufacturing parks.
In Saigon Hi-Tech Park (SHTP), multi-tier assembly, testing, and wafer-level packaging operations deploy our optical-grade fused quartz plates within rapid thermal processing (RTP) and infrared reflow furnaces. Zero trace metallic migration (Fe < 0.2 ppm) ensures absolute prevention of lattice defect poisoning during wafer annealing.
Expanding solar cell assembly hubs throughout Binh Duong and Dong Nai rely heavily on our infrared quartz plates and twin-tube infrared heating lamps. Superior near-to-mid infrared optical transmission (transmittance >92% between 1.0–2.5 μm) ensures rapid, homogeneous paste metallization and silicon contact sintering.
Tier-1 electronics manufacturing service (EMS) plants in Tan Thuan EPZ and VSIP depend on quartz glass observation panels and wave soldering IR preheating plates. The near-zero thermal expansion coefficient (5.5 × 10⁻⁷ /°C) eliminates cracking hazards under continuous 800°C thermal cyclic stress.
Research hubs along the Cai Mep and Dong Nai industrial clusters utilize our custom chemical-resistant quartz apparatus, electrolytic cells, and observation sight glasses. The pure silicon dioxide matrix resists attack from virtually all concentrated acids (except hydrofluoric) even at boiling points.
Technological advancement and foreign direct investment are driving rapid shifts in raw material requirements across Vietnam's industrial core.
As international capital establishes power electronics facilities in southern Vietnam, processing lines for Silicon Carbide (SiC) and Gallium Nitride (GaN) demand thermal shields operating beyond 1200°C. Conventional borosilicate glass fails catastrophically under these parameters, mandating a total industry transition toward high-purity natural fused quartz with an annealing point of 1210°C and softening threshold of 1683°C.
HCMC export manufacturing hubs face stringent EU and US supply chain carbon auditing. Industrial drying, textile printing, and coating plants in Long An and Dong Nai are substituting obsolete gas heaters with short- and medium-wave electric infrared quartz heating panels. This direct radiative transfer reduces thermal energy dissipation by 38% while cutting preheating downtime to mere seconds.
Procurement teams in Vietnam increasingly bypass generic regional traders in favor of direct engagement with verified source factories. Direct factory partnerships eliminate 25–40% markup premiums, ensure full raw material mill test certificates (MTC), and unlock prototype engineering reviews based on CAD/CAM drawings from a single piece.
Headquartered in Donghai County—the global center for crystal and high-purity silica sand processing—Vulra Quartz integrates raw material purification, hot thermal processing, and high-precision diamond machining.
| Total SiO₂ Content | ≥ 99.99% – 99.999% (Semiconductor Grade) |
|---|---|
| Impurity Control | Fe < 0.2ppm, Al < 14ppm, Cu < 0.05ppm, Na < 0.7ppm |
| Continuous Service Temp | 1100°C (Long-term continuous thermal load) |
| Maximum Peak Temp | 1450°C (Short-duration thermal peak) |
| Softening Point | Approx. 1683°C |
| Spectral Transmittance | > 90% (260 nm – 2500 nm range) |
| Machining Tolerances | Thickness: ±0.05 mm | Outer Dimensions: ±0.1 mm |
| Surface Finish Quality | Optical 60/40, 40/20 scratch-dig, Ra < 0.2 nm |
| Independent Auditing | On-site assessed & verified by TÜV Rheinland |
From initial design simulation to secure international container logistics arriving directly at Cat Lai Port.
Located at the epicentre of China's silica refinement belt, we source top-tier crystal sand directly at mine mouth, ensuring lower material input costs, uncompromised consistency, and zero trace heavy metal batch variations.
Equipped with computerized high-precision CNC water jets, multi-axis surface grinding centers, hydrogen-oxygen glass-blowing lathes, and computer-controlled electric annealing kilns to fully relieve internal stress.
Production integrity, plant facilities, and corporate management are validated by independent third-party TÜV Rheinland inspection teams. We deliver full RoHS compliance, CE conformance, and comprehensive batch trace analysis.
Specialized export packaging featuring multi-layered EPE vacuum cushioning, individually compartmentalized cartons, and heat-treated export plywood crates ensures 0% shipping breakage upon delivery to Cat Lai or Tan Son Nhat airport.
Essential guidance on importing custom quartz plates, tariff compliance, thermal selection, and transit protection.
Infrared quartz plates and fused silica plates are typically imported under HS Code 7002.31.00 (fused quartz or other fused silica tubes/plates) or HS Code 7020.00.19 (other articles of glass for industrial use). Under the ASEAN-China Free Trade Agreement (ACFTA), shipments accompanied by a valid Form E Certificate of Origin issued by our factory qualify for 0% preferential import duties into Vietnam.
While borosilicate (e.g., Pyrex) is economical, it softens at ~820°C and has a thermal expansion coefficient of ~3.3 × 10⁻⁶ /°C. In contrast, fused quartz withstands continuous operation at 1100°C (with peaks up to 1450°C), softens at 1683°C, and offers a dramatically lower expansion coefficient (5.5 × 10⁻⁷ /°C), making it virtually immune to thermal shock even when plunged from 1000°C into cold water.
Yes. Our core manufacturing business is drawing-based OEM/ODM customization. You can supply 2D engineering drawings (PDF, DWG, DXF) or 3D files (STEP, IGES). Our engineering team evaluates thickness-to-span ratios, edge polishing types, bevel angles, hole drilling, and notch clearances before production. Prototyping starts from just 1 piece.
Every plate undergoes an acid wash and deionized water rinse, followed by protective film lamination. Parts are cushioned in shock-absorbent, high-density polyethylene (EPE) foam cavities and packed into reinforced corrugated cartons. Outer shipping employs fumigated plywood crates with tilt-indicators and anti-drop shock sensors, ensuring zero breakage via sea (Cat Lai) or air cargo (Tan Son Nhat).
Standard custom plate prototypes require 5–8 working days for cutting, grinding, optical polishing, and stress annealing. Expedited air freight to Tan Son Nhat Airport takes 3–5 days via DHL/FedEx or direct air cargo. For volume container shipments, sea freight from Lianyungang/Shanghai port to Cat Lai Port takes approximately 10–14 days transit time.
Cutting, drilling, and flame working introduce severe residual micro-stresses within the rigid amorphous silica lattice. If unannealed, rapid heating cycles will cause stress fractures. We pass every machined part through programmable electric annealing furnaces at 1150°C–1215°C with slow, uniform cooling cycles to eliminate residual birefringence and optimize mechanical longevity.