Explore our drawing-customized fused quartz components serving Rayong, Chonburi, Ayutthaya, and Chachoengsao high-tech cleanrooms with certified ≥99.99% SiO₂ purity and sub-micron dimensional tolerances.
Precision CNC machined fused quartz flange rings, sight glasses, and reaction chambers built for Thai fab lines and R&D centers.
Heavy-wall fused quartz bell jars designed for vacuum coating, epitaxial deposition, and silicon ingot pulling across Rayong industrial parks.
Extreme acid corrosion resistance against aqua regia, HF traces, and boiling HNO₃ for Map Ta Phut petrochemical and university labs.
Flame-welded and ultrasonic-bath compatible fused quartz baths for megasonic wet bench stripping, etching, and IPA rinse operations.
The strategic shift under Thailand 4.0 and the Eastern Economic Corridor (EEC) has accelerated foreign direct investment across semiconductor assembly, high-layer HDI PCB manufacturing, and TOPCon photovoltaic module assembly.
Global semiconductor outsourced assembly and test (OSAT) suppliers and major PCB makers have constructed Tier-1 manufacturing facilities across Chachoengsao and Ayutthaya. These facilities require ultra-pure, chemically inert quartz cleaning tanks, carrier boats, and plasma etch rings that do not off-gas or shed microscopic particulate matter during wafer handling.
Chonburi and Rayong industrial estates host several of the world's largest overseas photovoltaic cell production operations. Transitioning to N-type TOPCon and Heterojunction (HJT) architectures demands large-diameter horizontal quartz furnace tubes (>450mm OD) and high-load quartz wafer boats that endure thermal ramping cycles at 1,050°C without sagging or devitrifying.
Thailand's Map Ta Phut petrochemical complex and automotive coating lines throughout Samut Prakan rely heavily on customized high-temperature quartz apparatus. Analytical digestion tubes, optical-grade flow cells for UV spectroscopy, and infrared quartz heating emitters operate continuously in harsh environments where standard borosilicate glass cracks or dissolves.
Our direct manufacturing facility is anchored in Donghai County, Jiangsu Province—the global hub representing over 70% of high-purity quartz refining and processing. By controlling raw plasma-fused ingot production up to final CNC cold work, we bypass distributors to offer Thai manufacturing operations unbeatable lead times and factory pricing.
| Performance Parameter | High-Purity Fused Quartz (Dongnan Grade A) | Standard Commercial Fused Silica | Borosilicate 3.3 Glass | Direct Value Impact for Thai Factories |
|---|---|---|---|---|
| SiO₂ Purity Ratio | ≥ 99.995 % | 99.90 % - 99.95 % | 80.5 % (Na/Al doped) | Eliminates heavy metal contamination in wafer fabs |
| Continuous Max Temperature | 1,150°C – 1,200°C | 1,050°C | 490°C | Withstands solar diffusion & LPCVD thermal stress |
| Short-Term Softening Point | 1,683°C | 1,610°C | 820°C | No structural deformation under sudden thermal spikes |
| Thermal Expansion (CTE) | 5.5 × 10⁻⁷ / °C | 5.8 × 10⁻⁷ / °C | 33 × 10⁻⁷ / °C | Zero cracking during rapid cold gas quenching |
| Helium Leak Tightness | < 1.0 × 10⁻⁹ mbar·L/s | < 5.0 × 10⁻⁷ mbar·L/s | N/A (Joint Failure) | Maintains extreme high-vacuum deposition integrity |
| UV-Vis Spectral Transmission | > 92% (190nm - 2,500nm) | > 85% (Vis only) | < 70% (Blocks UV) | Optimal optical transparency for UV curing & spectrometry |
By purchasing direct from our Jiangsu manufacturing line, Thai plant procurement teams eliminate tier-2 middlemen and regional trading markups, realizing significant cost-down benefits on frequent wear items like wafer carriers, digestion tubes, and burner nozzles.
Equipped with 5-axis CNC ultrasonic carving machines, precision wire cutters, and high-precision glass lathes, we fabricate custom non-standard quartz profiles from your 2D CAD or 3D STEP files within 7 working days, without expensive tooling charges.
We source raw natural crystal sand and maintain in-house continuous plasma electric arc fusing. Purity traceability covers every batch with glow discharge mass spectrometry (GDMS) certification, ensuring zero alkali metal migration into your process chamber.
Cross-border procurement of fragile, high-precision quartzware requires flawless logistics engineering. We provide complete localized import assistance tailored specifically for Thai customs declarations and duty exemptions.
Under the ASEAN-China Free Trade Agreement (ACFTA), we issue certified Form E Certificates of Origin for every shipment. This permits qualifying Thai companies to import customized quartz components at 0% preferential customs tariff, significantly reducing total landing cost.
Regular sea freight schedules out of Shanghai and Ningbo reach Laem Chabang Port in just 5 to 7 days, with direct container haulage to Eastern Seaboard estates in Rayong and Chonburi. For urgent prototype line repairs, air freight via Suvarnabhumi Airport (BKK) delivers in 48 hours.
Fragile optical and furnace quartz components are processed through multi-stage high-pressure deionized acid purification, followed by Class 1000 cleanroom nitrogen purge bagging. Structural export crating utilizes heavy plywood, shock dampers, and tilt-watch indicator sensors.
From initial GD&T drawing verification down to helium mass spectrometry inspection, every custom quartz part undergoes strict ISO 9001:2015 process checks before export release.
Engineering review of client CAD models, thermal load tolerances, and interface geometry for optimum fab manufacturability.
Hydrogen-oxygen high-temperature lathe spinning, precise flame welding, and oversized tube flanging in temperature-monitored bays.
Micro-groove slotting, laser surface cutting, surface optical polishing, and fine hole drilling held within ±0.02mm.
1,150°C stress-relief thermal annealing to eliminate residual internal stress, followed by hydrofluoric acid acid-pickling wash.
Helium mass spectrometer leak testing, GDMS purity verification, coordinate measuring machine (CMM) dimensional reports.
Explore our extended catalog of high-purity quartzware engineered for semiconductor processing lines, solar wafer diffusion furnaces, and industrial heating infrastructure across Thailand.
Hermetically sealed fused quartz bubblers with high-vacuum stopcocks and precision gas dip tubes, designed for volatile liquid precursors.
Optically transparent micro-machined quartz chips and flow cells for spectrophotometry, HPLC liquid chromatography, and biomedical cytometry.
Heavy-duty fused quartz bath fabricated for heated RCA clean, SPM piranha baths, and hydrochloric acid strip steps on automated wet benches.
Ground and flame-polished solid fused silica rods utilized as internal furnace supports, push rods, and optical light guides in semiconductor plants.
Machined and threaded quartz handle rods, structural spacers, and measurement probes designed to withstand long term 1,100°C immersion.
Electrical insulation lamp holders and end clips with zero thermal expansion, engineered for infrared drying tunnels in auto and paint plants.
Large-diameter fused quartz furnace process tubes up to 600mm OD, precision flanged, for TOPCon solar wafer oxidation and LPCVD runs.
Turnkey contract quartz manufacturing from CAD blueprints: machined flanges, vapor manifolds, furnace liners, and vacuum glass components.
Expert answers addressing customs duty exemption, cleanroom packaging, dimensional tolerances, and high-temperature performance for plant directors and engineering procurement teams in Thailand.
Under the ASEAN-China Free Trade Agreement (ACFTA), all customized quartz furnace tubes, bell jars, and cleaning tanks manufactured at our Donghai facility qualify for a Form E Certificate of Origin. When declared under HS Code 7002 or 7017, Thai customs grants 0% import duty for qualifying manufacturers. We provide full Form E paperwork, proforma invoices, clean packing lists, and bill of lading (B/L) documentation to guarantee frictionless clearance through Laem Chabang or Suvarnabhumi Airport.
Our workshop combines 5-axis ultrasonic CNC machinery with high-precision coordinate measuring machine (CMM) verification. For optical plates, flow cell channels, and wafer carrier boat slots, we routinely maintain tight linear tolerances of ±0.02mm to ±0.05mm. For oversized furnace tubes with outside diameters exceeding 400mm, wall thickness uniformity is held within ±0.2mm, with total ovality held under 0.5% across lengths up to 3,500mm.
We deploy a multi-tier protective packaging system engineered specifically for fragile international freight. Each finished component is cleaned in an ultrasonic deionized acid bath, baked dry, and vacuum-sealed inside anti-static cleanroom PE bags. Parts are nestled inside custom-molded high-density polyethylene foam cavities within internal corrugated containers, which are then bolted inside ISPM-15 heat-treated plywood export crates. Every crate is equipped with 3M ShockWatch impact indicators and TiltWatch sensors, backed by our 100% free remanufacture guarantee if transit damage occurs.
Natural fused quartz is manufactured by melting high-purity natural quartz crystal sand (≥99.99% SiO₂), providing outstanding resistance to thermal sagging at high temperatures (continuous use up to 1,150°C) at economical costs—making it the ideal choice for solar diffusion tubes, wafer carrier boats, and chemical tanks. Synthetic fused silica is synthesized via chemical vapor deposition of silicon tetrachloride (SiCl₄), achieving extreme purity (≥99.9999% SiO₂) with zero metallic impurities and superior UV transmission down to 190nm, making it necessary for deep UV photolithography and laser optical windows.
Standard sea freight from Shanghai or Ningbo ports to Laem Chabang Port takes just 5 to 7 days on the water, with customs clearance and truck transfer to Rayong, Chonburi, or Chachoengsao taking an additional 2 to 3 days. For urgent wafer fab replacements or research prototypes, express air cargo via Bangkok Suvarnabhumi Airport (BKK) delivers door-to-door in 48 to 72 hours. Prototype CNC machining lead time typically spans 7 to 10 working days upon final drawing approval.
Devitrification (cristobalite crystal growth causing milkiness and cracking) is primarily triggered by alkali metal surface contamination (Na, K, Li) combined with process temperatures above 1,100°C. Our quartz tubes utilize Donghai Grade-A ingots with alkali metal impurities restricted to <0.5 ppm. Furthermore, all tubes undergo continuous optical flame polishing and ultra-pure hot hydrofluoric acid etching to remove micro-fissures and microscopic seeds, dramatically prolonging operational tube lifespan under repeated thermal cycling in TOPCon diffusion furnaces.
Yes. A substantial portion of our production consists of drop-in replacement quartzware matching original equipment manufacturer (OEM) dimensions from leading toolmakers such as Centrotherm, Tempress, ASM, TEL, and Baccini. Customers can submit PDF technical blueprints, AutoCAD DWG/DXF drawings, or 3D STEP/IGES CAD files. Our engineering staff completes a rigorous Design-for-Manufacturability (DFM) assessment within 24 hours to guarantee seamless interchangeability with existing fab equipment.
Every commercial shipment comes standard with a comprehensive Quality Inspection Dossier. This package includes an optical Spectrophotometer UV-Vis-NIR Transmittance Curve, Glow Discharge Mass Spectrometry (GDMS) Chemical Trace Impurity Report certifying ≥99.995% SiO₂, Coordinate Measuring Machine (CMM) Dimensional Verification Sheet, Helium Mass Spectrometer Vacuum Leak Test Report (<10⁻⁹ mbar·L/s), and Certificate of Conformity (CoC).
