Laser Optics
Direct Factory Supply
Precision Fused Quartz Solutions for Industrial Scale
Manufactured from high-purity silica (>99.98%–99.99% SiO₂) to meet European CE standards and RoHS environmental directives. Designed for high thermal shock resistance and superior optical transmission.
Optical Sheet
Ultra Thin
Semiconductor
Silica Tube
High Purity
Photovoltaic
Furnace Tube
Industrial Market Intelligence
Fused Silica & Quartz Lens Dynamics in Vietnam's Manufacturing Hubs
Vietnam has transitioned from basic assembly to an international high-tech manufacturing center. The demand for verified optical-grade quartz components is driven by direct foreign investments in Bac Ninh, Thai Nguyen, Bac Giang, Da Nang, and Binh Duong.
99.99%
Certified SiO₂ Raw Purity
1100°C
Continuous Thermal Endurance
14,271m²
SGS Onsite-Verified Facility
0.02mm
CNC Machining Accuracy
Localized Applications Across Northern & Southern Industrial Corridors
Semiconductor Assembly & Packaging (SEAP)
Vietnam's major industrial zones in Bac Ninh and Da Nang have become epicenters for semiconductor test and packaging. High-purity quartz wafer boats and chemical carrier trays withstand aggressive acid etching (HF-excluded) and RCA clean workflows without leaching heavy metals into sensitive wafer substrates.
Photovoltaic Cell Manufacturing & Sintering
In Bac Giang and Hai Phong, world-scale Tier-1 solar cell manufacturers rely on quartz furnace tubes and sintering plates. Operating in continuous belt furnaces up to 1050°C, these quartz tubes allow optimal thermal conduction while safeguarding solar silicon wafers from devitrification or volatile dopant absorption.
Optoelectronics & UV Disinfection Hardware
Export-oriented electronic factories in Dong Nai and Binh Duong employ JGS1 and JGS2 optical quartz lenses for UV curing systems and industrial laser cutting heads. JGS1 grade provides optical transmittance exceeding 90% across the 185–2500 nm range, essential for precision laser marking and deep-UV water purifiers.
Market Trends Driving Quartz Consumption in Vietnam (2025–2030)
Vietnam's National Strategy for Semiconductor Industry Development has driven higher precision requirements for fabrication consumables. Standard borosilicate glassware can no longer meet the stringent low-CTE (Coefficient of Thermal Expansion) criteria demanded by modern production environments.
- Shift to Synthetic Grade Silica (JGS1): High-end optical sensor production in Hanoi and Ho Chi Minh City requires zero-bubble, stress-free optical windows to ensure optical clarity.
- Localization of Maintenance & Custom Jigs: Engineering teams in Vietnam seek suppliers who can produce directly from STEP/DWG drawings within rapid replacement timelines to minimize furnace downtime.
- Strict Environmental & Safety Compliance: Multinational corporations operating in Vietnamese export zones mandate RoHS and CE certifications to ensure seamless downstream export to Europe and North America.
Manufacturing Capabilities
Integrated Silica Supply: From Raw Ore to Optical Component
Operating from Lianyungang, China's premier fused quartz capital, Lovri Quartz controls the complete value chain in a modern 14,271 m² production complex verified onsite by SGS Group.
Full-Spectrum In-House Processing & Quality Assurance
By conducting raw quartz crushing, magnetic separation, acid pickling, continuous drawing, thermal annealing, precision CNC grinding, and optical polishing in one facility, we eliminate intermediate markups and maintain material purity across all batches.
- Polarization Stress Elimination: Every optical plate and furnace component is annealed at 1215°C and validated using polariscopes to avoid spontaneous fracturing under thermal cycling.
- Micro-CNC Dimensional Control: 5-axis ultrasonic CNC machinery produces micro-grooves, chamfers, multi-bore hole patterns, and polished edges down to ±0.02 mm.
- Export-Proof Packaging: Customized vacuum-sealed interior cushioning packed in multi-layered plywood cases built to survive maritime shipping via Haiphong and Cat Lai ports.
STAGE 01-03
Refining & Sand Prep
Direct selection of natural silica crystal rock, followed by mechanical pulverization and multi-stage vibrating mesh screening.
STAGE 04-06
Acid Clean & Hot Drawing
Hot nitric and hydrofluoric leaching to remove Fe/Al trace contaminants, followed by continuous thermal drawing of tubes and rods.
STAGE 07-09
Annealing & Fabrication
Full stress relief in high-temperature ovens at 1215°C, gas lathe flame fusion, end-capping, and vacuum branch sealing.
STAGE 10-12
Precision CNC & QA
Ultrasonic drill milling, optical polishing, polarimeter stress testing, laser dimension checking, and export wood packaging.
Material Selection Matrix
Comparative Analysis of Optical Quartz Grades
Selecting the optimal quartz grade depends on wavelength, working temperature, and corrosive environment. Review typical properties to optimize procurement budgets.
| Quartz Grade | Transmission Band | Impurity Level (ppm) | Hydroxyl [OH⁻] | Primary Industrial Use Cases in Vietnam |
|---|---|---|---|---|
| JGS1 (Synthetic Fused Silica) | 185 nm – 2500 nm (Deep UV) | Total impurities < 5 ppm | < 1200 ppm | Excimer lasers, semiconductor stepper lenses, UV lithography viewports |
| JGS2 (Optical Fused Quartz) | 220 nm – 2500 nm (Near UV / Visible) | Total impurities < 30 ppm | < 30 ppm | Sight glasses, UV disinfection sleeves, chemical analysis cuvettes |
| JGS3 (Infrared Fused Quartz) | 260 nm – 3500 nm (Infrared) | Total impurities < 30 ppm | < 5 ppm | IR heating elements, pyrometry windows, thermal furnace viewing ports |
| Opaque Fused Silica | Diffuse / IR reflective | 99.98% SiO₂ matrix | Variable | Thermocouple protection tubes, thermal barriers, solar flange collars |
Buyer Assistance
Vietnam Procurement FAQs: Clear Answers for Local Buyers
Practical procurement insights addressing customs clearance, import tax documentation, logistics lead times, and engineering validation.
What customs HS codes and import duties apply to fused quartz glass in Vietnam?
Fused quartz products are categorized under HS Code 7002.31 (Tubes of fused quartz/silica), 7002.39, or 7007.19/7017.10 (Laboratory or technical quartz glassware). With the ACFTA (ASEAN-China Free Trade Area), Vietnamese enterprises can leverage the Form E Certificate of Origin issued by our export team to qualify for preferential 0% import tariffs.
How do you protect fragile quartz lenses and tubes during transit to Haiphong or Cat Lai?
Every quartz tube or plate is wrapped in protective pearl cotton foam, placed in shock-absorbing compartments, and enclosed in fumigated plywood cases with internal damping blocks. Shipments include "Fragile" handling indicators and tip/shock monitors to ensure safe ocean and air delivery.
Can you manufacture quartz parts from custom drawings (STEP, DWG, PDF)?
Yes. Our engineering division processes CAD drawings in STEP, DWG, DXF, or vector PDF formats. We evaluate tolerance feasibility (down to ±0.02 mm), provide design-for-manufacturability feedback, and manufacture prototypes from 1 piece before entering production runs.
Are test reports and material compliance certificates provided with shipments?
Every production lot includes a Certificate of Analysis (COA) specifying SiO₂ purity (>99.99%) and trace elements. CE Declaration of Conformity and RoHS test certificates from accredited independent labs (such as SGS) are provided with shipping documentation.
What is the typical production and shipping lead time to Vietnam industrial parks?
Standard stock dimensions (tubes and plates) ship within 48 to 72 hours. Custom CNC parts and specialized wafer boats take 7 to 15 working days. Ocean freight from Lianyungang or Qingdao to Haiphong Port takes 4 to 7 days, while expedited air courier takes 2 to 4 days.
Why choose fused quartz instead of borosilicate glass (Pyrex) for industrial furnaces?
Borosilicate glass softens above 500°C and has a thermal expansion coefficient around 33 × 10⁻⁷ /°C. Fused quartz withstands continuous temperatures of 1100°C (1300°C short-term) and has a lower expansion coefficient (5.5 × 10⁻⁷ /°C). This allows high-temperature quartz tubes to be quenched from 1100°C directly into cold water without shattering.