Quartz Furnace Tube
Oversized Quartz Tube
Quartz Boat
Quartz Plate
Quartz Lamp Holder
Quartz Rod
Quartz Ring
Customized Quartz Products
Plasma-Fused Quartz Ingots
Quartz Irregular Shaped Sheets
Quartz Crystal Singing Pyramid
Half-white Coated Short-wave Infrared Quartz Heating Lamp
Company Profile & Core Manufacturing Strength
Empowering the semiconductor, photovoltaic, and high-precision scientific research sectors with premium fused silica solutions.
Lianyungang Southeast Quartz Products Co., Ltd. (Southeast Quartz), established in 2015, is situated in Donghai County, Lianyungang City, Jiangsu Province—celebrated globally as a premier national base for the silicon materials industry. As an integrated high-tech manufacturer combining R&D, precision structural design, full-scale production, technical consulting, and international import & export trade, the company harnesses superior raw quartz ore reserves in Donghai County to deliver world-class fused quartz glass solutions.
Through deep engagement in quartz glass hot-working, cold-machining, plasma fusion, and chemical purification, Southeast Quartz has become an indispensable core supplier of consumable components for semiconductor diffusion, chemical vapor deposition (CVD), wafer etching, photovoltaic cell sintering, high-temperature laboratories, and chemical analytical instrumentation.
Our standardized manufacturing complex houses automated CNC quartz processing centers, plasma melting torches, laser slicing instruments, and certified cleanroom annealing furnaces. With an end-to-end industrial chain spanning high-purity sand purification to micron-tolerance quartz components, we ensure consistent high-temperature stability (up to 1200℃ continuous working temperature and 1450℃ softening threshold), outstanding thermal shock endurance, near-zero thermal expansion coefficient, remarkable optical transmission from deep UV to near-IR, and superior electrical insulation under severe RF/plasma environments.
Why Choose Our High-Purity Fused Silica Rods & Components
Engineered to withstand aggressive corrosive gases, thermal stress, and ultra-clean vacuum parameters in microelectronics manufacturing.
Customer Supreme & Customization
Adhering to the guiding philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", our technical engineers collaborate directly with semiconductor equipment OEMs and fab managers. We produce customized quartz rods, tailored profile shapes, specialized flanges, precision grooves, and multi-tier boat configurations matched exactly to your process chambers.
Rigorous Quality & Defect Control
Every quartz rod, furnace tube, and bell jar undergoes comprehensive analytical inspection before dispatch. Our multi-stage validation incorporates helium mass spectrometry leak detection, hydrostatic pressure resistance validation, bubble & inclusion microscopic analysis, and spectrometer purity testing to guarantee non-contaminating, zero-leakage, and ultra-pure operational lifespans.
Advanced Plasma & Thermal Processing
Utilizing state-of-the-art plasma fusion torches and continuous electric furnace drawing lines, our quartz rods exhibit minimal OH content (<5 ppm to <20 ppm options), exceptionally low trace alkali metals (Fe, Cu, Ni, Na, K, Li each <0.1 ppm), and pristine internal homogeneity without striae or micro-cracks.
| Physical & Chemical Parameter | Standard Fused Quartz | Semiconductor Ultra-Pure Silica | Application Significance in Semiconductor Fabs |
|---|---|---|---|
| SiO2 Purity Level | ≥ 99.99% | ≥ 99.999% (5N Grade) | Eliminates heavy metal contamination during high-temp wafer diffusion. |
| Continuous Operating Temp | 1100 °C | 1200 °C (Short term: 1450 °C) | Maintains structural integrity inside LPCVD and oxidation furnaces. |
| Thermal Expansion Coefficient | 5.5 × 10⁻⁷ / °C | 5.4 × 10⁻⁷ / °C (20°C - 320°C) | Immunity to thermal shock; withstands extreme thermal cycling without fracture. |
| Hydroxyl (OH) Content | < 30 ppm | < 5 ppm (Plasma Fused / Dehydroxylated) | Minimizes structural devitrification and maintains high IR transmission. |
| Dielectric Strength (20°C) | 25 - 40 kV/mm | > 40 kV/mm | Essential for RF plasma isolators, electrode fixtures, and etching chambers. |
Featured Semiconductor Quartz & Fused Silica Products
Explore our comprehensive lineup of quartz rods, furnace tubes, wafer boats, and custom high-purity components designed for demanding industrial environments.
High Purity Quartz Rod / Fused Silica Rod
Explore Rod Specs →
Plasma-Fused Quartz Ingots
View Ingot Details →
Oversized Fused Quartz Tube
View Oversized Tubes →
Custom Size Quartz Furnace Tube
Learn More →
Quartz Bell Jar (Thermal Stability)
View Bell Jars →
Premium Quartz Boat for Wafer Processing
View Quartz Boats →
Fused Silica Quartz Plate (Optical/Thermal)
View Quartz Plates →
Custom Transparent Quartz Glass Ring
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Heat Resistant Quartz Lamp Holder
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High Purity Quartz Digestion Tube
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Customized Quartz Instruments & Vessels
Custom Engineering →Looking for Full Series Catalog?
Explore all quartz rods, tubes, plates, crucibles, and tri-acid purification equipment.
All Products OverviewCritical Applications of High-Purity Fused Quartz Components
Engineered for high-stress wafer handling, corrosive acid vapor handling, and extreme thermal gradient environments.
Semiconductor Fabrication & Epitaxy
Within semiconductor frontend and backend lines, high-purity quartz rods serve as structural push-pull rods, wafer cassettes, thermocouple protection sheaths, and optical guide rods. In thermal oxidation, rapid thermal processing (RTP), and low-pressure CVD reactors, our fused silica components prevent metal migration and guarantee high yield rates for sub-micron wafer batches.
Photovoltaic & Solar Ingot Sintering
In high-efficiency TOPCon, HJT, and Perovskite solar cell manufacturing, quartz boats and furnace tubes withstand prolonged high-temperature phosphorus/boron diffusion at 1000°C–1200°C without sag or devitrification, maximizing wafer batch throughput.
Ultra-Pure Chemical & Tri-Acid Purification
Quartz glassware, distillers, condensers, and tri-acid purification equipment eliminate trace leachables when refining electronic-grade HF, HNO3, and HCl acids. The chemical inertness of high-purity SiO2 prevents elemental leaching into analytical reagents.
Specific Component Application Gateways:
- • Applications of Quartz Rods: Carrier rods, paddle arms, optical probes →
- • Applications of Quartz Tubes: Sintering liners, CVD chambers →
- • Quartz Boats: Horizontal & vertical slotted wafer carriers →
- • Industries Applied by Quartz Plates: UV windows, observation ports →
- • Quartz Insulation Rings: High-voltage dielectric barriers →
- • Burners & Torches: Cl2/H2 torch combustion burners →
Product Processing & Hot-Working Workshop
Witness precision cold-grinding, flame-welding, lathe-turning, and automated precision polishing of quartz glass.
Product Processing Display
Factory Images & Facility Infrastructure
Standardized workshops, certified annealing lines, and state-of-the-art testing stations located in Donghai County.
Factory Display
Factory Images
Certificate Display & Quality Accreditations
Certified to international quality, environmental safety, RoHS, and REACH criteria for direct global shipment.
Trusted by Customers Worldwide
Providing dependable fused silica solutions across Europe, the Americas, Asia-Pacific, and the Middle East.
Quality • Service • Global Presence
With reliable product quality, rapid delivery capacity, and attentive technical after-sales service, the products of Lianyungang Southeast Quartz Products Co., Ltd. (Southeast Quartz) not only cover all provinces and municipalities throughout China but are exported extensively to high-tech manufacturing hubs in North America, Germany, Japan, South Korea, Singapore, Malaysia, and the Middle East, gaining the highest level of industry trust.
Continuous Innovation and Material Research
Looking ahead, Southeast Quartz will persistently intensify R&D investments in high-purity synthetic fused silica, plasma-refined quartz ingots, and micro-machining technologies. We are dedicated to providing world-class semiconductor fabrication plants, analytical labs, and precision optical manufacturers with premier quartz components that drive scientific and technological advancement.
