Precision Products & Thermal Emitters
Engineered to exact dimensional tolerances, optical flat standards, and rigorous spectral criteria for critical processing and vacuum environments.
Engineering Fused Silica Plates for Stringent Applications
A technical overview of material purity, transmission metrics, thermal durability, and micro-machining tolerances serving specialized Swiss industry clusters.
Deep-UV & IR Transparency
Fabricated using synthetic silicon tetrachloride (SiCl4) or high-grade natural quartz rock crystals. Our synthetic UV-grade fused silica eliminates optical absorption bands at 248nm and 193nm, providing an exceptional internal transmission exceeding 92% from 185nm up to 2100nm.
Thermal Shock Resilience
With an extremely low coefficient of thermal expansion (CTE of ~5.5 × 10^-7 / K between 20°C and 320°C), our fused silica plates withstand rapid thermal shock. Plates heated up to 1150°C can be quenched instantly into freezing water without structural fracture or phase transformation.
Micro-Surface Finishing
Leveraging double-sided planetary polishing and laser interferometer verification, we deliver surface roughness down to Ra ≤ 0.5 nm, scratch-dig tolerances compliant with MIL-PRF-13830B (20-10 or 10-5), and parallelism under 5 arcseconds for optical window and laser beam routing assemblies.
| Physical / Chemical Property | JGS1 (Synthetic UV Grade) | JGS2 (Optical Grade Fused Quartz) | JGS3 (Infrared Optical Grade) |
|---|---|---|---|
| Primary Transmission Range | 185 nm – 2500 nm | 220 nm – 2500 nm | 260 nm – 3500 nm (Low OH-) |
| Density & Hardness | 2.20 g/cm³ | Mohs 5.5 - 6.5 | 2.20 g/cm³ | Mohs 5.5 - 6.5 | 2.20 g/cm³ | Mohs 5.5 - 6.5 |
| Continuous Max Operating Temp | 1100 °C | 1100 °C | 1150 °C |
| Hydroxyl (OH-) Content | ≤ 1200 ppm | ≤ 150 - 200 ppm | ≤ 5 ppm (Water-free IR band) |
| Thermal Expansion (0–300 °C) | 5.5 × 10-7 K-1 | 5.5 × 10-7 K-1 | 5.4 × 10-7 K-1 |
Tailored Fused Silica Applications across Geneva
From scientific installations near Meyrin to high-precision horological workshops along Plan-les-Ouates, our plates address exacting local engineering standards.
Particle Physics & CERN Research Units
Geneva's frontier high-energy physics infrastructure mandates ultra-pure dielectric vacuum viewports, beam-line quartz windows, and scintillator bases. Our plates exhibit zero outgassing under ultra-high vacuum (UHV) regimens (< 10^-10 mbar) and minimal radiation-induced darkening under extreme dose conditions.
Haute Horlogerie & Micro-Manufacturing
Geneva's legendary watchmaking manufacture houses demand transparent inspection plates, laser-welding fixtures, and chemical vapor deposition (CVD) watch-dial substrates. Fused silica delivers scratch resistance superior to standard borosilicate and unyielding flatness for micrometric assembly jigging.
Lake Geneva MedTech & Biochemical Diagnostics
Bio-analysis laboratories throughout the Health Valley corridor leverage our custom quartz flow cell covers, spectrophotometer windows, and microfluidic chip plates. The ultra-low autofluorescence of synthetic silica ensures zero baseline noise during multi-wavelength fluorescent immunoassay reads.
Trends Shaping the Geneva Industrial & Research Ecosystem
How the shift toward quantum photonics, automated precision manufacturing, and environmental decarbonization is transforming silica procurement.
Quantum Photonics & Optical Metrology
With Swiss universities and Geneva-based research consortiums scaling quantum communication nodes and laser frequency combs, demand for zero-bubble, Grade-0 homogeneity fused silica with minimal birefringence has risen by over 34% year-over-year.
Extreme Cleanroom Compliance (ISO 4/5)
Cleanroom standards across the Vaud-Geneva biotechnology and micro-electronics zone increasingly stipulate particle-free packaging and vacuum-sealed nitrogen containment directly from the raw plate manufacturer, reducing incoming inspection overhead.
Supply Chain Diversification & Direct OEM
Geneva procurement teams are moving away from multi-tier European distributor markups. By establishing direct OEM channels with certified Donghai/Lianyungang production hubs, labs achieve 25–40% cost efficiency without compromising precision inspection protocols.
Enterprise Strengths & Kavri Quartz Heritage
Combining the mineral resource wealth of China's premier quartz capital with over a decade of verified ISO-aligned international manufacturing discipline.
Donghai Quartz Cluster Direct
Headquartered in Lianyungang, Jiangsu, directly adjacent to Donghai—the world's foremost quartz crystal refinement hub. This proximity provides unmatched access to virgin silica reserves and flame-working master craftsmen.
10+ Years Onsite-Verified OEM
Founded in 2014 with premises verified on-site by third-party auditors and Alibaba.com. 3 specialized manufacturing lines delivering over US$2.5M in annual output with an 81–90% global export ratio across Europe and North America.
Full In-House Metrology & QC
Every plate and emitter undergoes laser profilometry, spectrophotometric transmission mapping, polariscope strain analysis, and micrometer thickness checks. Full inspection reports accompany shipments upon request.
Rapid Swiss Logistics & DDP Terms
Comprehensive shipping coverage including FOB, CFR, CIF, EXW, and DDP to Canton of Geneva and neighboring cantons. Packaged in custom shock-absorbing timber crates with ≤ 4-hour engineering turnaround for quotation requests.
Frequently Asked Questions: Geneva Procurement
Addressing common queries from Swiss procurement specialists, research technicians, and equipment engineering directors.
What optical grade of fused silica plate is recommended for DUV laser applications?
For deep ultraviolet laser systems (e.g., excimer lasers operating at 193nm or 248nm) common in Swiss precision micro-machining and spectroscopy, we recommend JGS1 synthetic fused silica. JGS1 is synthesized with virtually zero bubble inclusions, bubble class 0, and eliminates the oxygen-deficiency center absorption peak, ensuring >90% transmission at 200nm.
Can you produce custom shapes, beveled edges, and stepped counterbore drillings?
Yes. Utilizing multi-axis CNC ultrasonic diamond grinding and laser-trepanning machinery, we fabricate circular discs, square plates, rectangular viewports, stepped windows, and custom-located countersunk holes with positional tolerances within ±0.05 mm and bevel edges from 0.1 mm to 1.5 mm at 45° to prevent edge chipping.
How do you handle shipping to Switzerland to avoid customs delays and import friction?
We routinely supply engineering buyers across Switzerland under DDP (Delivered Duty Paid) or CIF Geneva airport/forwarding hubs. We generate compliant commercial invoices, export declaration documents, and HS-code classifications (HS: 7002.31 / 7002.39 / 7017.20), accompanied by origin certification to ensure clean clearance through Swiss Federal Customs (FOCBS).
What is your minimum order quantity (MOQ) for custom-dimensioned fused silica plates?
Standard quartz components and trial sample plates typically start at an MOQ of 5 to 10 pieces. For unique prototype runs required by university spin-offs or R&D trials in Geneva, we evaluate custom drawings individually and support low-volume qualification batches prior to scaled serial production.
How does your shock-proof packaging guarantee safe arrival of fragile optical plates?
Plates are individually wrapped in anti-static, lint-free optical lens paper, vacuum-sealed in cleanroom polyethylene bags, cushioned in form-fitted high-density multi-layer EVA foam enclosures, and secured inside robust international export plywood crates reinforced with external shock-watch indicator labels.