STAGE 01
Raw Materials Cutting
High-grade natural crystal lumps are cut and visually sorted to exclude visual defects and discoloration.
About Lovri Quartz Products Co., Ltd.
SGS Onsite-Verified Custom Fused Quartz Manufacturer · 14,271 m² Dedicated Processing Facility in Lianyungang, Jiangsu
5.0/5.0
Verified 100%
Customer Satisfaction Rating
5.0 rating based on verified global orders, 4.6% higher than category average.
≤2h
Ultra Fast
Average Inquiry Response
Rapid technical feedback vs. the 4h industry baseline for fast drawing reviews.
94.1%
On-Time
On-Time Dispatch Rate
Consistent production scheduling backed by average dispatch cycle of 8.4 days.
0.0%
Dispute Free
Trade Dispute Record
Flawless compliance history with 28.6% buyer reorder rate across international accounts.
Enterprise Overview
Integrated Fused Quartz Engineering & Custom Manufacturing
Lovri Quartz Products Co., Ltd. operates an independently verified, 14,271 m² production facility in Tuofeng Industrial Park, Lianyungang, Jiangsu—the epicenter of China's high-purity silica industry. With over 6 years of focused technical operation and registered capital of USD 140,000, we specialize in high-temperature, high-purity fused quartz components for semiconductor, solar photovoltaic, laser optics, UV disinfection, and analytical laboratories.
Unlike workshops relying on purchased semi-finished quartz glass, Lovri Quartz controls the complete upstream-to-downstream chain. From raw mineral crushing, multi-stage acid pickling (achieving ≥ 99.99% SiO₂ purity), and precision tube drawing, to thermal stress annealing, CNC milling, and optical flame polishing, every operation is managed by our 16 line specialists and verified by dedicated QA/QC staff.
Audited Onsite by SGS
Custom Manufacturer Certification
Manufacturing Integrity
End-to-End Fused Quartz Processing Flow
Total quality begins with raw mineral selection. Our plant houses equipment for all 12 core stages of fused silica processing, eliminating unmonitored subcontractors and ensuring consistent batch chemical purity.
STAGE 02
Silica Pulverizing
Heavy pulverizing units break raw quartz boulders into controlled-grain granular quartz sand.
STAGE 03
Granular Rescreening
Vibrational rescreeners ensure uniform grain sizes necessary for void-free thermal fusion.
STAGE 04
Acid Pickling & Refining
Hydrochloric and hydrofluoric acid tanks leach out iron and metallic impurities, elevating purity to ≥99.99% SiO₂.
STAGE 05
Continuous Tube Drawing
Electrical resistance thermal draw towers produce precise OD and wall thicknesses for clear and opaque tubes.
STAGE 06
Thermal Annealing
Programmed annealing cycles heat glass up to 1215 °C to eliminate internal stress and prevent thermal shock ruptures.
STAGE 07
Precision End Sealing
Lathe-assisted oxyhydrogen flame torches fuse hemispherical, test-tube, or optical flat closed ends.
STAGE 08
Apparatus Joint Welding
Skilled quartz glass blowers assemble multi-port quartz reactors, wafer boats, and ground-joint connections.
STAGE 09
Vacuum Evacuation
Vacuum baking ovens evacuate air and backfill inert gases for sealed laser tubes and ozone chambers.
STAGE 10
CNC Precision Machining
High-speed diamond tooling performs micro-hole drilling, wafer slotting, groove milling, and edge profiling.
STAGE 11
Optical & Dimensional Check
Laser calipers, optical projectors, and light boxes inspect tolerances, bubble classes, and surface scratch-dig ratios.
STAGE 12
Shockproof Export Packing
Pearl wool wrapping, vacuum blister sealing, and heavy reinforced wooden crates safeguard against air and ocean transit vibration.
Production Hardware
Specialized Machinery & Equipment Roster
Our Lianyungang workshops house dedicated machinery designed explicitly for fused silica fabrication.
Cutting Machine
Diamond wire and saw disc units for burr-free end cuts.
End Sealing Machine
Dual-chuck glass lathes with synchronized rotational heaters.
Annealing Furnace
Digitally programmed thermal cycles exceeding 1200 °C.
Precision Testing Machine
Wall uniformity, concentricity, and thermal expansion gauges.
Packing Line
Automated strapping and custom foam buffer encapsulation.
Pulverizer Unit
Tungsten-carbide lined crushing chambers for clean silica.
Rescreening Sifter
Multi-deck sieve classification for tightly grouped mesh sizes.
Pickling Tank Unit
Corrosion-proof acid leaching stations with DI-water cascade.
Vacuum Pack Machine
Hermetic foil and moisture barrier packaging systems.
Tube Drawing Machine
Automated feed mechanisms with precision diameter sensors.
Continuous Furnace
Controlled thermal profiles for stress neutralization.
Sealing Machine
Precision oxy-hydrogen burner assemblies for tight seals.
Vacuuming Station
Turbo-molecular pump setups pulling up to 10⁻⁴ Pa.
CNC Machining Center
Multi-axis computerized milling center with water cooling.
In-House Laboratory
Spectrophotometer analysis and chemical purity testing.
Polarization Stress Tester
Polarimetric analysis detecting microscopic residual stresses.
Verified Capacity
Verified Manufacturer Capabilities & Trade Data
Audited operational figures independently assessed by SGS Group for overseas procurement departments.
Customization & Engineering
- Service ModelODM & OEM Customization
- Processing InputsSample & Drawing-Based
- Supported Drawing FormatsPDF, DWG, DXF, STEP, IGS
- R&D Engineering Team2 Dedicated Engineers
- Prototyping AvailabilityFrom 1 piece minimum
- Digital Media SupportComplete media specs available
Trade & Export Logistics
- Exporting Experience5+ Consecutive Years
- Registered CapitalUSD 140,000
- Primary Shipping PortShanghai Port (CN)
- Primary Export MarketsNorth America (13%), South America, Europe, Asia
- Average Dispatch Time8.4 Days (Category Avg: 10.3d)
- E-Commerce Delivery CapabilityFully Verified Systems
Workforce & Quality QA/QC
- Total Factory Floorspace14,271 m² (SGS Onsite Verified)
- Dedicated Line Operators16 Qualified Glass Crafters
- QA/QC Full-Time Staff2 Designated Inspectors
- Internal Testing MethodPolarized stress & dimensional checks
- Traceability ProtocolBatch material chemical logs
- Trade Assurance Coverage100% Quality & On-Time Protection
Compliance & Reliability
Certified Quality Systems for High-Stress Applications
Thermal rupture and UV transmission degradation are critical concerns in quartz applications. At Lovri Quartz Products Co., Ltd., each batch undergoes strict stress-birefringence screening with cross-polarization inspection before packing.
99.99% SiO₂ chemical assay record
Full CE compliance for quartz apparatus
RoHS restriction compliance documentation
Zero-defect polarimetric stress checks
CE Certification
Certificate ID: HTT202607592R Quartz Glass European Conformity
RoHS Compliance
Report ID: HTT202607592CH Hazardous Substance Free Verification
Work Directly With The Factory
Request Technical Feasibility & Direct Quotation
Whether you require prototype quartz components, custom optical wafer boats, or high-volume furnace tubing, our engineers provide complete drawing analysis, material grading (JGS1, JGS2, JGS3), and DFM feedback within 2 hours.