HEATING & DRYING
BAO RAN SiO2 Heating Quartz Tube
Engineered for disinfection cabinets, industrial convection chambers, water dispensers, and specialized high-purity thermal process cavities.
Precision Synthesized Glass
Featured Fused Silica & Quartz Components for Central Vietnam
Direct from source processing: raw crystalline refinement to five-axis CNC diamond finishing. Standard dimensional stock and custom prototype-to-production fabrication with complete material traceability.
LASER SUBSTRATE
BAO RAN 419 Quartz Sheet (0.1–0.5mm)
Ultra-thin 99.99% SiO2 optical wafers and protective laser sheets. RoHS certified, 200-mesh polished for beam diagnostics and spatial filters.
HIGH TRANSMITTANCE
Transparent Fused Quartz Sheet & Tube
Superior optical clarity with extreme heat resistance. Ideal for customized acid digestion vessels and high-transmittance cleanroom sight windows.
OPTICAL GRADE
Optical Grade Fused Quartz Plate / Disc
Ultra-smooth 200 mesh chemical-mechanical polished plate, 99.99% pure silica content. RoHS compliant for multi-kilowatt fiber laser viewports.
APPARATUS
419 High Purity Quartz Glass Reactor
Bespoke quartz glass instruments designed for laser photochemical synthesis, catalytic reactors, and high-temperature vacuum containment chambers.
PRECISION FIXTURE
Fused Quartz V-Groove Fixture & Array
Sub-micron dimensional accuracy for optical communication alignment, fiber arrays, planar lightwave circuits, and telecom transceiver assembly.
LASER CAVITY
Triple Bore Flow Tubes (C-Shape Welded)
Seamless multi-bore cooling and filtration sleeves for solid-state medical lasers, flashlamps, and precision industrial laser cutting heads.
HEAVY THERMAL
916 Closed-End High Pressure Quartz Tube
Rated for continuous 1100°C and intermittent 1400°C extreme operation. High burst pressure resistance for pyrolysis, laser cladding, and furnaces.
Strategic Industrial Fit
Precision Fused Silica Applications Across Da Nang's Core Hubs
As Da Nang transforms into Vietnam’s Silicon Valley of Central Key Economic Zone (CKEZ), optical-grade fused silica serves as an indispensable baseline material across precision manufacturing clusters.
Semiconductor Metrology & Cleanrooms
Da Nang Hi-Tech Park (DHTP) hosts advanced assembly, test, and wafer inspection setups. JGS1 synthetic fused silica windows eliminate fluorescence, delivering 92% transmission at 193nm/248nm DUV lithography inspect tools.
High-Power Laser Cutting & Welding
Heavy fabrication facilities in Hoa Khanh and Lien Chieu Industrial Parks utilize 6kW to 20kW fiber laser cutters. Our debris shield windows withstand intense thermal blooming, back-spatter, and extreme heat cycles without focal shift.
Renewable Energy & Photovoltaics
Photovoltaic module producers across central coastal corridors require robust diffusion tubes, wafer carriers, and quartz pyrometry sight glasses resistant to hydrofluoric etching and persistent 1050°C furnace sintering.
Engineering Support for Central Vietnam Tech Operations
Whether you require standard 1-inch and 2-inch protective laser discs or complex custom-slotted quartz wafer boats built to CAD/STEP files, our engineers deliver direct factory pricing and technical compliance validation.
Engineering Whitepaper
Fused Silica vs. Standard Quartz: Material Selection Criteria
Selecting the ideal optical glass requires balancing hydroxyl (OH⁻) content, thermal shock parameters, and spectral transmission bands to avoid premature equipment downtime.
| Optical / Physical Property | JGS1 (Synthetic Fused Silica) | JGS2 (Fused Quartz / Flame) | JGS3 (Infrared Fused Quartz) |
|---|---|---|---|
| Primary Transmission Spectrum | 185 nm – 2,500 nm (Deep UV & Visible) | 220 nm – 2,500 nm (UV / Optical Standard) | 260 nm – 3,500 nm (Near to Mid IR) |
| Hydroxyl (OH⁻) Concentration | < 5 ppm to 1200 ppm (Grade specific) | 150 ppm – 300 ppm | < 5 ppm (Water-free IR grade) |
| Thermal Expansion (20°C to 320°C) | 5.5 × 10⁻⁷ / °C | 5.5 × 10⁻⁷ / °C | 5.5 × 10⁻⁷ / °C |
| Annealing Point / Softening Point | 1140°C / 1730°C | 1215°C / 1730°C | 1215°C / 1730°C |
| Laser Induced Damage (LIDT @ 1064nm) | > 15 J/cm² (10 ns pulse) | > 7.5 J/cm² (10 ns pulse) | > 5 J/cm² (10 ns pulse) |
| Typical Vietnamese Industry Sector | Semiconductor steppers, UV-C sterilizers | Industrial fiber laser windows, furnace sight | Gas chromatography, IR heat pyrometers |
Negligible Thermal Expansion
With a coefficient of 5.5 × 10⁻⁷/°C, our windows endure direct water quenching from 1100°C without mechanical rupture.
Laser Damage Resistance
High internal homogeneity (Δn < 2 × 10⁻⁶) prevents thermal lensing in kilowatt-class industrial processing heads.
Acid & Alkali Immunity
Completely inert to nitric, sulfuric, and hydrochloric acids. Only reactive with concentrated HF or boiling phosphoric acid.
Sub-Nanometer Polishing
Double-sided precision lapping yielding surface roughness Ra < 0.5nm and scratch-dig specifications down to 10-5 per MIL-PRF-13830B.
Local Ecosystem Evolution
Da Nang's Shift to High-Reliability Optical & Semiconductor Supply Chains
Understanding why Da Nang-based procurement officers and engineering directors are rethinking their precision quartz and fused silica vendor networks.
Mitigating Regional Port Bottlenecks
Central Vietnamese manufacturing previously relied on spot re-sellers in Hanoi or Ho Chi Minh City. Direct manufacturer sourcing routed via Da Nang Port (Tien Sa) and Da Nang International Airport cuts lead times by 10 to 18 days.
The Semiconductor Shift in Da Nang
With the government’s preferential masterplan designating Da Nang as Vietnam’s semiconductor testing and microelectronics hub, demand for cleanroom-packaged, ultra-pure quartz apparatus has surged by over 42% year-over-year.
Strict Anti-Delamination Standards
Central Vietnam’s humid coastal climate deteriorates lower-grade borosilicate sight glasses. Industrial users are switching to zero-porosity, non-hygroscopic fused silica to prevent clouding, alkaline blooming, and seal degradation.
Enterprise Manufacturing Competence
Source Factory Authority: Full Control from Raw Silica to Custom CNC Parts
Lovri Quartz Products Co., Ltd. delivers institutional fused quartz fabrication from Lianyungang, the world’s preeminent silica processing district, with dedicated supply channels serving Da Nang and the surrounding industrial zones.
Unlike optical traders who buy pre-formed tubing or sheets, our plant manages the entire production cycle in-house: raw silica rock sizing, pulverizing, chemical acid de-ironing, tube drawing, vacuum annealing, and multi-axis CNC milling.
- 14,271 m² Workshop: SGS onsite-inspected production lines with dedicated optical clean inspection stations.
- Batch-Level Polarization Testing: Every annealed blank is verified for residual stress birefringence to eradicate thermal cracking risks.
- Rapid Custom Machining: Full support for PDF, DXF, DWG, and STEP formats for slots, counterbores, O-ring grooves, and optical bevels.
- Low-Risk MOQ: Standard sample orders start at 1 to 5 pieces to support engineering prototyping before volume releases.
SGS Onsite Verified Manufacturer
12-Stage Controlled In-House Fabrication
Procurement Clarity
Frequently Asked Questions by Da Nang Buyers
Straight answers on technical tolerances, customs declarations, shipping turnaround times, and optical coating options for Central Vietnam projects.
How do I determine whether my Da Nang application requires JGS1, JGS2, or JGS3 fused silica?
The selection is governed primarily by your operational wavelength and working environment:
JGS1 (Synthetic Fused Silica): Essential for ultraviolet operations down to 185 nm. It has negligible bubble inclusion and provides maximum UV laser damage thresholds, making it the choice for semiconductor lithography, excimer laser windows, and UV sterilization sensors.
JGS2 (Optical Grade Fused Quartz): Cost-effective standard for visible and near-infrared applications (220 nm to 2,500 nm). Ideal for laser cutting machine cover glasses, sight glass flanges, and viewports in Da Nang steel and fabrication plants.
JGS3 (Infrared Fused Quartz): Free of the typical 2.73 µm water absorption band (OH content < 5 ppm). Chosen for optical pyrometry, mid-infrared spectroscopy, and thermal inspection ports up to 3,500 nm.
What is the typical shipping lead time to Da Nang Hi-Tech Park or Hoa Khanh Industrial Zone?
For standard dimensions (e.g., Ø20mm to Ø100mm circular discs or standard quartz tubes), goods ship from our central manufacturing warehouse within 3 to 5 business days. Express air courier transit directly to Da Nang International Airport (DAD) takes 3 to 4 days, with clearance completed directly into your factory premises.
For high-volume production orders or custom CNC machined apparatus, sea freight consolidation arriving through Da Nang Port (Tien Sa) typically requires 10 to 14 days, including Form E preferential ASEAN-China customs clearance assistance.
How are fragile quartz discs and extended tubes protected against coastal transit humidity and shock?
All finished optics and tubes undergo ultrasonic ethanol cleaning followed by cleanroom packaging. Optics are individually isolated within lint-free lens tissue and vacuum-sealed pet carriers or individual EVA foam-cut slots with silica desiccant packs to prevent coastal moisture contamination.
Outer packaging consists of triple-wall reinforced corrugated cartons or ISPM-15 certified heat-treated export wooden cases lined with high-density EPE shock absorption layers, resulting in a zero-breakage transit record across Southeast Asia shipments.
Can you provide custom anti-reflective (AR) thin-film coatings for laser protection windows?
Yes. In addition to precision ground and polished fused silica substrates, we apply dielectric anti-reflective (AR) coatings, high-reflection (HR) coatings, and partial-reflectance beam-splitter layers. For industrial fiber lasers in Da Nang, our dual-wavelength AR coating (1064nm & 635nm guide laser) achieves transmission ≥ 99.8% with an LIDT exceeding 15 J/cm² at 10ns pulse widths.
What quality documentation and testing reports accompany deliveries?
Every shipment is accompanied by a Certificate of Conformance (CoC), material purity spectrometer assay (SiO2 purity ≥ 99.99%), and dimension inspection protocols. Upon request, we provide spectrophotometer transmission curves (UV-Vis-NIR), surface interferometer flatness maps (λ/4 or λ/10), and RoHS & REACH compliance declarations.
Accelerate Your Optical Procurement in Da Nang
Connect with our technical glass engineering team today. Send your part specifications, drawings (PDF/CAD), target tolerances, and project quantities to receive a direct manufacturing quotation within 24 hours.
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