High-Purity Fused Quartz Glass Manufacturer in Donghai, China
Donghai County Nivra Quartz Products Co., Ltd. was established in February 2019 in Donghai County, Lianyungang, Jiangsu Province — universally recognized as China's crystal and quartz manufacturing capital. Operating as an integrated manufacturer and international trading enterprise with an experienced workforce of 101 to 200 skilled personnel, we specialize in the custom engineering and volume supply of premier-grade fused quartz products.
Our core operating philosophy is grounded in "Quality First, Reputation Foremost". We maintain comprehensive in-house capabilities ranging from optical-grade raw quartz selection and CNC diamond machining to precision thermal lathe forming, flame polishing, and cleanroom annealing. Every component delivered to our global OEM and research partners conforms to certified dimensional tolerances, exceptional optical clarity, and robust thermal shock resistance.
With verified on-site facilities located at 285 Heping East Road, Lianyungang, Jiangsu, our company operates in strict compliance with international trade standards and legal frameworks. By combining regional natural mineral advantages with advanced fabrication technologies, we empower demanding industries including semiconductor processing, photovoltaic cell fabrication, laser optics, and analytical scientific research.
End-to-End Processing & Custom Manufacturing Capabilities
From initial mineral refining to CNC machining and flame-working, our integrated workshops maintain strict quality control at every phase of production.
CNC Machining & Precision Cutting
Equipped with high-precision CNC multi-axis milling, diamond wheel slicing, surface grinding, and laser drilling machines capable of achieving strict dimensional tolerances down to ±0.02 mm.
Thermal Forming & Flame Lathe Working
Senior glassblowing technicians with over 15 years of bench experience handle precision quartz glass lathe work, welding of large-diameter tubes and flanges, spiral bending, and thermal stress relief.
Double-Sided Optical Polishing
Planar double-sided grinding and high-transmittance polishing achieving surface roughness Ra ≤ 0.5 nm, scratch-dig 40/20 or 20/10, and high parallelism for UV, VIS, and IR laser optics.
Strict Quality Control & Metrology
Comprehensive in-house metrology including spectrophotometers, laser interferometer surface testers, polariscopes for internal stress inspection, and coordinate measuring machines (CMM).
Cleanroom Acid Washing & Annealing
Ultrasonic solvent cleaning, hot deionized water rinsing, and high-purity nitric/hydrofluoric acid chemical etching lines, backed by computer-controlled electric annealing furnaces up to 1250 °C.
Shock-Proof Export Packaging
Engineered shock-absorbing EPE foam molds, vacuum wrapping, multi-layer corrugated export cartons, and reinforced fumigation-free wooden crates ensuring 100% safe transit worldwide.
On-Site Verified Production Facility
A look inside our operational floors located at 285 Heping East Road, Lianyungang, Jiangsu.
Export Markets & Commercial Track Record
Serving precision optical, chemical, semiconductor, and academic laboratories across 7 major world regions.
Export Revenue Share by Region
Verified Commercial Credentials
| Full Legal Name | Donghai County Nivra Quartz Products Co., Ltd. |
| Operational Address | 285 Heping East Road, Lianyungang, Jiangsu, China |
| Business Type | Custom Manufacturer & Direct Exporter |
| On-Site Verification | Verified & Certified by Independent 3rd Party |
| Total Workforce | 101 - 200 Qualified Personnel |
| Official Inquiry Email | [email protected] |
| Average Reply Speed | ≤ 5 Hours (Engineering review team) |
Connect Directly with Our Quartz Engineering Team
Whether you require standard high-purity clear fused quartz tubes, customized optical window discs, wafer boats, or high-temperature crucibles, our team in Donghai provides rapid technical reviews, sample prototyping, and scalable volume manufacturing.
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