BET & Adsorption
Engineered Precision Solutions
Featured Quartz Glass Capillary & Processing Components
Custom manufactured from high-purity natural silica sand (≥ 99.99% SiO₂) in Donghai County. All geometries fully machined to drawing tolerances with laser drilling, micro-grooving, and optical polishing.
BET & Adsorption
Optical Grade
Analytical Holder
Thermal Spiral
Photochemical
High-Purity Quartz Photocatalytic Reactor
Internal Light Port
UV Transparent
Chemical Inert
Lab Synthesis
High-Temp Quartz Twin Tube Bottom Flask
Moulded Bottom
Dual Ports
Thermal Shock Resistant
CVD & Vacuum
Semi Processing
High Purity Fused Quartz Bell Jar Chamber
Heavy Wall Thickness
Corrosion Resistant
Plasma Chamber
Localized Supply Integration
Industrial Applications of Quartz Capillaries Across Vietnam
As Vietnam accelerates high-tech foreign direct investment (FDI) in key industrial corridors (Bac Ninh, Bac Giang, Thai Nguyen, Da Nang, and Ho Chi Minh City High-Tech Park), fused quartz capillaries and engineered components serve critical technological roles.
Semiconductor Back-End Packaging & Test (OSAT)
Vietnam's expansion in semiconductor assembly and test facilities requires ultra-precise fused silica capillary wire bonding tools, dielectric guiding needles, and laser-sliced fiber optic alignment sleeves with non-conductive, low-CTE physical properties.
Photovoltaic (PV) Solar Cell Diffusion & Gas Delivery
With Bac Giang and Hai Phong operating massive PV tier-1 ingot, wafer, and cell production hubs, quartz capillaries and multi-bore tubes act as precision gas spargers, flame injector tubes, and thermal pyrometer sight-tubes under 1100°C POCl₃ diffusion runs.
Analytical Laboratories & BET Surface Testing
National universities and environmental validation centers across Hanoi and Ho Chi Minh City leverage high-pressure quartz capillaries, micro-cuvettes, and twin U-tubes for chemisorption BET characterization without matrix contamination.
Optical Communications & Fiber Splicing
High-precision single-bore and multi-bore fused quartz capillary ferrules support telecommunication equipment assemblers in Binh Duong and Dong Nai, delivering high UV-to-NIR light transmission and sub-micron concentricity.
Engineering Whitepaper
Fused Quartz Optical & Thermal Properties Matrix
Engineered fused silica exhibits an exceptional balance of mechanical strength, thermal endurance, and optical transparency from Deep UV (DUV) through mid-infrared spectra.
| Property Parameter | Synthetic Fused Silica (JGS1) | Optical Fused Quartz (JGS2) | Infrared Fused Quartz (JGS3) | Test Standard / Protocol |
|---|---|---|---|---|
| SiO₂ Purity Level | ≥ 99.999% (Low trace metals) | ≥ 99.99% | ≥ 99.98% | ICP-MS Spectrometry |
| Spectral Transmission Band | 185 nm – 2,500 nm (Deep UV) | 220 nm – 2,500 nm (UV-VIS) | 260 nm – 3,500 nm (Low OH⁻ IR) | Varian Cary 5000 UV-Vis-NIR |
| Hydroxyl (OH⁻) Content | ≤ 1,200 ppm | ≤ 150 – 200 ppm | ≤ 5 – 8 ppm (Water Free) | FTIR Absorption @ 2.73 µm |
| Continuous Working Temp | 1,100 °C | 1,100 °C | 1,150 °C | DIN 52324 Thermal Life |
| Maximum Short-Term Peak | 1,300 °C | 1,300 °C | 1,350 °C | Annealing limit tests |
| Thermal Expansion (CTE) | 5.5 × 10⁻⁷ / °C (20–320 °C) | 5.5 × 10⁻⁷ / °C | 5.4 × 10⁻⁷ / °C | Dilatometer Expansion |
| Dielectric Strength (20°C) | 25 – 40 kV/mm | 25 – 35 kV/mm | 25 – 35 kV/mm | ASTM D149 breakdown |
Market Intelligence
Vietnam Quartz Glass Procurement Trends & Sourcing Shift
Procurement engineers across Vietnam are dynamically transitioning direct purchasing lines to optimize delivery lead times, bypass tariff bottlenecks, and secure custom prototyping.
1. "China + 1" Component Alignment
As tier-1 EMS and semiconductor assembly corporations relocate production to Vietnam, engineers require immediate factory-direct raw stock and sub-assemblies shipped seamlessly from coastal China (Donghai / Lianyungang) via direct sea-freight to Hai Phong and Cat Lai ports, bypassing expensive middleman markups.
2. Demand for Laser Micro-Drilling
Vietnamese electronics producers are retiring traditional diamond abrasive drills. Procurement teams now mandate micron-grade laser cut-outs, chamfered capillary orifices, and sub-10-micron tolerance channels to mitigate internal micro-cracks during ultrasonic bath cleaning cycles.
3. Stringent Thermal Shock Compliance
Solar ingot pulling and high-speed analytical gas testing across local industrial parks demand quartz capillaries capable of immediate thermal cycling from 1100°C to ambient air without fracturing, highlighting the necessity of certified low-CTE fused silica glass.
Factory Direct Advantages
Why Vietnamese Engineers Partner with Zunex Quartz
Headquartered in Donghai County—the globally recognized "Crystal Capital"—Zunex Quartz combines primary raw quartz mineral access with cutting-edge optical CNC machining.
Primary Mineral Purity (≥ 99.99%)
Direct integration into Donghai's high-purity quartz reserves allows us to deliver components with minimal transition metals (Fe, Cu, Ni ≤ 1 ppm), safeguarding your semiconductor processes against mobile ion poisoning.
Rapid Technical Response (≤ 2 Hours)
Our sales and technical drafting desk operates with an official 100% response rate on Alibaba. Dedicated quartz engineers evaluate custom 2D drawings (DWG/PDF) and 3D models (STEP) to verify manufacturability within two hours.
Laser Micro-Finishing & Cleanroom Pack
Advanced quartz laser finishing equipment enables ultra-clean microbore capillaries, precise spiral tube shaping, zero-taper slotting, and multi-layer shockproof export packaging that survives ocean and air transit undamaged.
Buyer Assistance
Frequently Asked Questions by Vietnamese Importers
Comprehensive solutions to customs documentation, shipping timelines, minimum quantities, and technical tolerances.
What are the transit transit times and customs protocols for shipping quartz to Vietnam?
Shipments departing our Donghai facility are dispatched via courier express (DHL/FedEx/SF Express) to Hanoi, Da Nang, or Ho Chi Minh City within 3 to 5 business days. Sea freight routes via Lianyungang/Qingdao directly to Hai Phong Port or Cat Lai (HCMC) take approximately 7 to 12 days. We provide commercial invoices, standard HS tariff declarations (HS Code: 7002.31 for quartz tubes), and Certificate of Origin (Form E) for preferential import duties under the ACFTA agreement.
Can Zunex fabricate microbore quartz capillaries according to custom customer drawings?
Yes. Custom fabrication is our primary manufacturing domain. We machine capillaries with inner diameters (ID) as small as 0.05 mm and outer diameters (OD) tailored to your exact optical or fluidic housing. Submit your DWG, DXF, or PDF drawings with defined tolerances, flame-polished or cut ends, and required surface roughness (Ra).
How do JGS1, JGS2, and JGS3 quartz grades differ in spectrophotometric operations?
JGS1 is synthetic fused silica offering superior transmission in the deep ultraviolet band (185–2500 nm), optimal for excimer lasers and optical photolithography. JGS2 is standard optical-grade fused quartz for UV-VIS applications (220–2500 nm), balancing cost and clarity. JGS3 is vacuum-melted quartz with extremely low hydroxyl content (OH⁻ ≤ 5 ppm), eliminating water absorption bands at 2.73 µm to guarantee clear transmission through the infrared spectrum up to 3500 nm.
What packaging standards prevent glass fractures during transit to Vietnamese factories?
Precision capillaries and quartz glassware are sealed in dust-free PE bags, cushioned within individual custom-contoured high-density EPE foam slots, and crated inside heavy multi-layer corrugated boxes reinforced by fumigation-free solid plywood export cases with external shock-watch indicator labels.
What is your Minimum Order Quantity (MOQ) for prototypes and pilot lines in Vietnam?
We actively support R&D engineering centers, university labs, and production ramp-up phases with MOQs as low as 1 to 5 pieces for custom machined quartz parts. Production runs benefit from tiered volume discounts.
Comprehensive Quality Verification Protocols for Imported Fused Quartz
For quality assurance teams at multinational high-tech production sites in Vietnam, verifying incoming fused quartz glass purity is critical to avert batch failure. Contaminants such as alkali ions (Na⁺, K⁺, Li⁺) induce devitrification at temperatures above 1000°C, causing early crystallization into cristobalite and structural fracturing.
At Zunex Quartz, every export production run adheres to strict dimensional and thermal testing benchmarks:
Polarimetric Stress Birefringence
Tubes and capillaries are evaluated under polarized light inspection to ensure complete structural stress relief annealing at 1215°C, ensuring internal stresses remain ≤ 10 nm/cm.
Optical Bubble & Inclusion Classification
In compliance with DIN ISO 10110 standards, all optical capillary sections and viewing windows maintain Class 0 or Class 1 zero-inclusion tolerances within central active apertures.
Need Precision Quartz Components for Your Vietnam Facility?
Send your CAD drawings, required quartz grades (JGS1, JGS2, JGS3), and dimensional tolerances to our engineering group. We guarantee professional evaluation with an engineer-certified quote within two hours.
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