Direct supply from China's crystalline hub in Donghai to the central industrial hub of Tegucigalpa. Explore our precision CNC-machined, optically polished, and thermal shock-resistant quartz components.
Photocatalytic degradation vessel with internal illumination welding, designed for advanced electrochemical laboratories.
Ozone-free, high-pressure twin tube assembly for Quantachrome catalyst characterization and specific surface area analyzers.
Cylindrical fused silica rod manufactured for fiber optic coupling, laser transmission, and UV curing waveguides.
Thermal-shock resistant fused silica crucibles engineered for metallurgical melting, calcination, and precious metal assays.
Custom dual-bore fused quartz tubing with precision optical flame polishing for infrared emitters and water treatment heaters.
Precision-coiled quartz cooling condenser spirals and heat exchanger elements constructed to exact customer geometries.
Ultra-flat JGS1/JGS2 window sheets, laser cutting, edge chamfering, and high-transmittance test plate fabrication.
Heavy-wall clear quartz furnace tubes and sight glass cylinders certified for continuous high pressure and 1100°C operations.
A rigorous examination of synthetic silica and fused quartz morphology designed to satisfy the strict quality requirements of procurement engineers and laboratory managers across Tegucigalpa and Central America.
Fused quartz is an amorphous single-component glass composed almost exclusively of silicon dioxide (SiO2) in tetrahedral coordination. Unlike standard borosilicate or soda-lime glass formulations that incorporate alkaline fluxing agents to lower processing temperatures, high-purity fused quartz retains an extremely tight three-dimensional network. This macromolecular network confers extraordinary thermal shock resistance, near-zero linear thermal expansion (5.5 × 10⁻⁷ /°C), an exceptional continuous operating threshold of 1100°C, and unmatched spectral transmission spanning from the deep vacuum ultraviolet across the visible spectrum up to the mid-infrared region.
For industrial researchers and process engineers operating in Honduras—where high atmospheric humidity, tropical climates, and reliance on imported capital machinery demand extreme durability—selecting the correct optical quartz substrate is paramount. Zunex Quartz Products Co., Ltd., based in China's quartz heartland of Donghai County, combines natural high-grade crystalline feedstock with electric fusion, hydrogen-oxygen gas flame refining, and chemical vapor deposition (CVD) to engineer quartz sheets, plates, discs, and custom tubes tailored for high-temperature and chemically corrosive environments.
| Physical / Chemical Property | JGS1 (Synthetic Fused Silica) | JGS2 (Optical Grade Quartz) | JGS3 (Infrared Fused Quartz) | Standard Borosilicate (Pyrex Type) |
|---|---|---|---|---|
| SiO2 Purity (%) | ≥ 99.999% (Low Metallic Impurity) | ≥ 99.99% (Refined Crystal Quartz) | ≥ 99.98% (Low Hydroxyl Content) | ~ 80 - 81% (Contains B2O3, Na2O) |
| Useful Spectral Range | 185 nm – 2,500 nm (Deep UV) | 220 nm – 2,500 nm (UV-Vis) | 260 nm – 3,500 nm (Near-IR/Mid-IR) | 350 nm – 2,000 nm (Visible Only) |
| Hydroxyl [OH-] Content | ≤ 5 – 30 ppm (Controlled) | ≤ 150 – 200 ppm | ≤ 5 ppm (Water-Free Absorption) | Non-applicable |
| Max Working Temp (Continuous) | 1100 °C | 1100 °C | 1150 °C | 450 – 500 °C |
| Softening Point (°C) | 1730 °C | 1683 °C | 1683 °C | 820 °C |
| Thermal Expansion (0-300°C) | 5.4 × 10⁻⁷ /°C | 5.5 × 10⁻⁷ /°C | 5.5 × 10⁻⁷ /°C | 33 × 10⁻⁷ /°C |
As the political capital and commercial epicentre of Honduras, Tegucigalpa unites national academic institutions, environmental testing agencies, and expanding light manufacturing clusters that rely on customized quartz components.
The Universidad Nacional Autónoma de Honduras (UNAH) and national testing institutes located around Tegucigalpa deploy our JGS1 spectrophotometer cuvettes, chemisorption BET twin tubes, and photolysis reactors for material synthesis, trace mineral assays, and wastewater purification studies requiring high deep-UV transmission down to 185 nm.
With Tegucigalpa's ongoing modernization of municipal and regional water distribution plants (SANAA) and private beverage facilities, ozone-free fused quartz sleeves and twin tubes act as high-performance protective jackets for germicidal C-band ultraviolet (UV-C) lamps, ensuring biological sterilization without optical solarization.
Honduran mineral extraction hubs shipping through Francisco Morazán department utilize our thick-wall fused quartz crucibles and combustion tubes for high-temperature fire assays, gravimetric analysis, and induction furnace operations capable of sustaining thermal gradients up to 1300°C without mechanical fracture.
The southern solar corridors feeding power toward the central Tegucigalpa grid demand precision pyrometry viewports and IR-transmitting JGS3 optical quartz windows to monitor inverter thermography, photovoltaic module laminators, and high-intensity solar simulators under desert-like radiation loads.
Regional medical product manufacturers and pharmaceutical formulation cleanrooms in Tegucigalpa implement custom acid-resistant quartz vessels and high-purity condenser spirals for the synthesis of reagents where boron or heavy metal leaching from standard laboratory glassware cannot be tolerated.
Honduras' agricultural export laboratories analyze coffee, cacao, and grain extracts using specialized quartz combustion tubes and NIR optical sample trays, taking advantage of zero absorption bands in the 1000–2500 nm range to achieve rapid, reproducible moisture and lipid readings.
Strategic purchasing behavior among Tegucigalpa-based operations has undergone substantial shifts, accelerating the transition toward factory-direct Chinese manufacturers.
Traditionally, engineering laboratories in Tegucigalpa acquired quartz plate replacements and furnace tubes through third-party distributors in North America or regional generalists. This introduced supply markups exceeding 200% alongside unpredictable shipping delays. Today, direct procurement from Donghai manufacturers through expedited air freight (DHL, FedEx, UPS) directly to Toncontín International Airport (TGU) or Palmerola International Airport (XPL) reduces lead times from 16 weeks to less than 10 business days.
Standardized off-the-shelf catalog parts rarely fit specialized testing equipment. Engineering buyers in Honduras increasingly demand direct interaction with factory CAD specialists who can evaluate DWG, DXF, and STEP files, optimizing edge beveling, laser perforation tolerances (±0.05 mm), and surface micro-roughness (Ra < 0.5 nm) before hot flame-polishing.
Operating from Donghai County, Jiangsu—China's crystal capital—Zunex Quartz Products Co., Ltd. combines extensive mineral supply chains with state-of-the-art CNC and laser quartz finishing.
Our Alibaba-verified 100% response rate ensures that procurement managers and engineers in Honduras receive formal technical reviews and commercial quotations within 2 hours or less, despite time zone variations.
Specializing in laser drilling, micromachining, surface slotting, and flame contouring on quartz plates and tubes down to ±0.02 mm tolerances, preventing micro-fractures common to mechanical abrasive drilling.
Engineered shock-absorbing foam encapsulation, vacuum-sealed inner packaging, and heavy-duty reinforced wooden crates ensure delicate quartz plates and long furnace tubes arrive pristine in Tegucigalpa.
With an annual export turnover of US$2.5M – US$5M and an independently verified repeat-order rate of 43%, we maintain strict ISO/quality control procedures from raw ingot slicing to final spectrophotometric checks.
Essential guidance addressing international logistics, import documentation, technical specifications, and custom manufacturing workflows for Honduran organizations.
For custom manufactured prototypes, small batches, or emergency replacement quartz plates, we dispatch via DHL Express, FedEx, or air cargo directly to Tegucigalpa (Toncontín/Palmerola airports) within 4 to 8 transit days. Large bulk orders or heavy furnace tubing are efficiently shipped by sea to Puerto Cortés, followed by bonded overland transit to Tegucigalpa in approximately 28 to 35 calendar days.
Your operating spectral transmission determines the ideal grade. Choose JGS1 (synthetic silica) for deep ultraviolet applications (185–2500 nm), UV lithography, or excimer lasers. Opt for JGS2 (fused natural quartz) for standard sight windows, furnace observation ports, and UV-Visible spectroscopy (220–2500 nm). Select JGS3 for thermal imaging and infrared radiators, as its low hydroxyl content removes the water absorption peak at 2730 nm, transmitting up to 3500 nm.
Yes. OEM custom fabrication from customer drawings is our core specialty. You can submit CAD files in PDF, DWG, DXF, or STEP format detailing outer dimensions, tolerances (±0.05 mm achievable), chamfer requirements, polished surfaces (optical 60/40 or 80/50 scratch-dig), and hole drillings. Our engineering team reviews the drawing and returns a manufacturability confirmation and quotation in under 2 hours.
Every international shipment to Tegucigalpa is supplied with complete commercial invoices, packing lists with Harmonized System (HS) code classification (typically 7002.31 or 7002.32 for fused quartz), Certificates of Origin, Certificate of Material Conformance (recording SiO2 purity and trace element PPM counts), and heat-treated ISPM-15 phytosanitary certificates for all timber crates.
Fused quartz exhibits a linear coefficient of thermal expansion of only 5.5 × 10⁻⁷ /°C—roughly one-sixth that of borosilicate glass. Consequently, a quartz window or tube heated to 1100°C can be immediately submerged in ice-cold water without shattering, making it an indispensable safety material for extreme temperature metallurgical and chemical sight windows.
Yes. We welcome small batch orders, educational institute orders, and single-piece prototypes for university testing or initial equipment trials. Our flexible production lines in Donghai accommodate both one-off custom reactor prototypes and repetitive high-volume container shipments for industrial plants.