99.99% SiO₂
Fused Quartz Capillary Tube
SiO₂ ≥ 99.99%, 200 Mesh, annealed at 1200°C. Engineered for laser systems and ultra-clean gas feedlines.
Technical Specs
Direct Factory Catalog
Semiconductor & High-Temperature Quartz Portfolio
Precision quartz components manufactured with sub-micron CNC slotting, zero-stress thermal annealing, and verified under polarization stress testers. Standard models and custom configurations ready for swift export to South Korea.
Thermal Sintering
Photovoltaic Sintering Quartz Tube
Superior optical transmittance and thermal gradient durability. Designed for continuous operation up to 1100°C.
Technical Specs
Chemical Inert
Translucent Polished Quartz Glass
Ozone generator, lab IR heating, and welded branch configurations. Resists thermal shock and corrosive vapor.
Technical Specs
Precision Spiral
High-Purity Quartz Spiral Tube
Specialized optical filtering and heating geometry with custom bending, welded terminals, and RoHS certification.
Technical Specs
Sub-Micron Flatness
Optical Transparent Quartz Sheet
Double-sided optical polishing for lithography jigging, wafer substrate handling, and viewport observation.
Technical Specs
JGS1 Deep-UV
JGS1 UV Fused Silica Jig & Window
Transmission from 185 nm to 2500 nm. Bubble-free class for DUV inspection sensors and semiconductor jigs.
Technical Specs
Core Product
Semiconductor Quartz Wafer Boat
Horizontal and vertical diffusion slotted carriers. Custom slot pitch, 99.99% purity, zero wafer sagging.
Technical Specs
Vacuum Flanged
Diffusion Process Quartz Tube
High-precision wall consistency, fire-polished cuts, and seamless flanges for high-vacuum LPCVD processing.
Technical Specs
Ecosystem Integration
High-Purity Quartz Applications Across Daejeon Hubs
Known as the premier technological research capital of South Korea, Daejeon anchors world-class semiconductor research, pilot foundries, and advanced nanomaterial institutes. Quartzware engineered for these demands requires extreme trace-metal containment and uncompromising dimensional stability.
Daedeok Innopolis Pilot Lines
National research laboratories and venture incubators within Daedeok Innopolis operate flexible small-batch diffusion and thermal oxidation chambers. Our customizable quartz boats (available in 2-inch to 8-inch wafer layouts) allow researchers to achieve repeatable dopant profiles without trace metal contamination (Fe, Cu, Ni below 0.1 ppm).
Compound Semiconductor & Power ICs
With Daejeon's rapid expansion into Gallium Nitride (GaN) and Silicon Carbide (SiC) power semiconductor prototyping, operating temperatures routinely exceed 1150°C. Our quartz boats and diffusion tubes undergo vacuum high-temperature baking to eliminate hydroxyl (-OH) groups, preventing thermal devitrification and wafer warping.
Advanced Metrology & Wet Etch Cleaning
Beyond furnace chambers, wafer fabrication ecosystems in Yuseong-gu utilize high-purity quartz carriers for aggressive chemical baths (RCA cleans, Piranha solution, boiling nitric acid). Our flame-fused quartz surfaces provide uniform acid resistance without micro-pitting, protecting structural integrity through repeated acid cycles.
Engineering Whitepaper
Fused Quartz Material Properties & Trace Impurity Profile
In high-temperature semiconductor fabrication, furnace longevity and wafer yield depend directly on the purity of the raw silica sand and post-machining stress management. Lovri Quartz sources directly from Lianyungang's premier silica basin, utilizing 4-stage acid leaching to guarantee international cleanroom standards.
| Property Parameter | Test Standard / Value | Semiconductor Fab Implication |
|---|---|---|
| SiO₂ Content | ≥ 99.995% (ICP-MS Tested) | Eliminates parasitic dopant diffusion into active wafer layers. |
| Hydroxyl Group (-OH) | < 20 ppm (Synthetic / Low-OH treated) | Prevents high-temperature sagging and structural sag above 1050°C. |
| Thermal Expansion (20–300°C) | 5.5 × 10⁻⁷ cm/cm·°C | Unrivaled thermal shock resistance during rapid boat insertion/pull. |
| Softening Point | 1730 °C | Ensures dimensional stability during extreme oxidation runs. |
| Heavy Metals (Fe, Cu, Ni, Cr) | Total < 0.8 ppm | Crucial for preserving gate oxide integrity and minority carrier lifetime. |
| Slot Pitch Tolerance | ± 0.02 mm (CNC Disc Ground) | Eliminates automated robotic end-effector wafer transfer errors. |
Strategic Market Outlook
Trends Shaping Quartzware Procurement in South Korea
Procurement directors and lab managers across South Korea are navigating supply-chain localization and stringent multi-sourcing mandates. Understanding the shifting dynamics of quartz consumables is vital for operational resilience.
1. Direct-to-Factory Tier-2 Multi-Sourcing
South Korean fabs are reducing reliance on local Tier-1 distributors who impose massive markups on basic consumable quartzware. Direct partnerships with certified source factories in Lianyungang enable engineering teams in Daejeon to slash replacement boat and chamber tube costs by 35% to 50% while maintaining equivalent material purity.
2. Tightened Wafer Pitch for High-Density Loads
As pilot fabs transition to high-throughput batch processing for MEMS and power transistors, wafer boats must accommodate tighter pitch spacing (e.g., 2.38 mm vs. legacy 4.76 mm) without introducing slot chip defects. Lovri's 5-axis CNC diamond grinding achieves mirror-smooth tooth roots, preventing particulate micro-dust during loading.
3. Rigorous ESG & Traceability Compliance
With national regulatory emphasis on ESG, every batch of fused quartz entering Chungcheongnam-do industrial zones must provide full upstream audit trails. Lovri provides third-party SGS factory assessments, RoHS material certs, and certified polarization stress reports with every freight consignment.
Enterprise Strengths
Why Daejeon Fabs Partner with Lovri Quartz
Operating a vertically integrated 14,271 m² manufacturing campus in Lianyungang, China, Lovri Quartz controls the complete technical sequence—from raw sand pulverizing to multi-axis CNC finishing.
Source Factory Chemistry
We do not purchase re-drawn scrap tubing. We crush, screen, and acid-pickle quartz sand in-house to achieve pristine 99.99% SiO₂ matrix consistency across every single boat strut.
Polarization Stress Inspection
Internal glass stress is the #1 reason wafer boats crack under 1100°C furnace cycling. Every unit undergoes precision polarization testing to ensure thorough thermal relief.
Agile Low-MOQ Prototyping
Research institutes in Daejeon cannot afford minimum orders of 50 pieces for experimental geometries. We gladly manufacture customized prototype wafer boats starting from a 1-piece MOQ.
Customs-Ready Export Packing
Custom-molded shock-absorbent EPE foam structures within reinforced composite wooden cases guarantee 100% breakage-free delivery via Incheon port or air cargo directly to your lab door.
Buyer's Advisory
Daejeon Semiconductor Quartzware Procurement FAQ
Clear, direct answers addressing technical specifications, logistics, and drawing customizations frequently raised by Korean fab managers.
What lead times can research facilities in Daejeon expect for customized wafer boats?
For custom drawings (PDF, DWG, or STEP format), engineering review and tolerance validation occur within 24 hours. Prototype boat production typically requires 10 to 14 days, with urgent air freight to Incheon International Airport taking 2 to 3 business days. Domestic road transit from Incheon to Daejeon is completed within hours under DDP or DAP terms.
How does Lovri ensure wafer boat slots do not generate micro-chipping during high-temp insertion?
Micro-chipping originates from raw diamond grinding blade chatter. At Lovri, every slot undergoes secondary CNC fine-grit smoothing followed by localized high-temperature hydrogen-oxygen flame fire-polishing. This rounds the edge transitions to a clean Ra < 0.2 µm, eliminating particle shedding against fragile wafer bevels.
Can you match OEM furnace dimensions (e.g., TEL, Kokusai, ASM, Centrotherm)?
Yes. We regularly fabricate compatible vertical ladder boats, horizontal cantilever boats, paddle carriers, and end-caps built to OEM mechanical specifications. Customers need only supply sample photos with critical dimension offsets or standard engineering drawings.
What chemical cleaning procedures are recommended prior to furnace loading?
Before first furnace dispatch, our quartzware undergoes ultra-pure DI water ultrasonic rinsing and class-10,000 cleanroom packaging. However, for cleanroom integration in semiconductor fabs, we recommend an initial dip in a 5% to 10% HF solution for 3–5 minutes followed by an electronic-grade DI water cascade rinse and hot nitrogen dry.
What documentation is delivered alongside export shipments to South Korea?
Every shipment arrives with an itemized Certificate of Analysis (CoA) outlining SiO₂ purity and trace metal counts (ICP-MS data), a Dimensional Inspection Record, a Polarization Stress Release Confirmation, and China-Korea FTA Certificates of Origin (Form E or equivalent for preferential duty processing).
Connect Directly with Our Quartz Engineering Team
Send your custom wafer boat drawings, tube specifications, or replacement part numbers. Receive a detailed manufacturing feasibility analysis and competitive direct-factory quotation for Daejeon delivery within 24 hours.