Company Overview
Lianyungang Zelvo Quartz Products Co., Ltd. – Engineered fused quartz and precision optical components fabricated to exact technical drawings for semiconductor, scientific, and industrial systems.
Precision Quartz Fabrication Rooted in China's Crystal Capital
Lianyungang Zelvo Quartz Products Co., Ltd. operates in Donghai County, Jiangsu Province — universally recognized as China's primary raw-material and processing hub for high-purity natural silica. Leveraging deep regional supply chain advantages and over 10 years of master engineering expertise, we provide specialized high-purity fused quartz solutions to research institutions, optical instrument builders, and industrial manufacturers across 5 global continents.
Our operations blend traditional hot-flame glassblowing techniques with CNC laser precision finishing, covering micro-drilling, high-tolerance grooving, optical cutting, and custom weld assembly. Whether producing single-piece prototype apparatus for academic researchers or multi-thousand tube runs for cleanroom semiconductor applications, we strictly monitor physical tolerances, thermal integrity, and surface finish.
Corporate Factsheet
Comprehensive Fabrication & Engineering Strengths
Every component is manufactured from certified high-purity fused silica (SiO₂ ≥ 99.99%) offering continuous thermal performance up to 1100 °C, thermal shock resilience, and acid-resistant chemical inertness.
Laser Micro-Drilling & CNC Milling
Non-contact CNC laser machining achieves clean hole diameters down to 0.5 mm, precise slots, and custom chamfered edge bevels without micro-cracking or sub-surface thermal stress.
Precision Flame Working & Welding
Experienced master glassblowers execute seamless vacuum welds, multi-way junction tees, flared flanged joints, and U-bends for specialized tube furnace reactors and laboratory vessels.
Optical Lapping & Flame Polishing
Optical-grade double-side polishing delivers laser-grade surface parallelism and exceptional optical transmission ranging from deep UV (190 nm) to near-infrared (2500 nm).
Inside Our Donghai Manufacturing Workshops
Onsite-verified operational spaces equipped with standardized cutting, fusing, laser machining, and optical quality verification lines.
Main Production Floor
Dedicated processing bays for raw material storage, sizing, and preliminary quartz tube and rod cutting.
Hot Working & Annealing Bay
Specialized hydrogen-oxygen burners and programmable annealing ovens to eliminate internal residual thermal stress.
Pre-Shipment Quality Inspection
100% individual piece inspection covering dimensional calipering, surface inclusions, bubbles, and optical clarity.
International Trade Capacity & Track Record
Serving OEM buyers, academic institutions, and optical distributors worldwide with certified transaction safety and professional export logistics.
Primary Export Distribution
Demonstrated export experience across major industrial clusters, backed by custom shock-absorbent packaging and wooden crating.
Verified Buyer Ratings & Trust
Ready to Review Your Quartz Specifications?
Send your 2D/3D technical drawings or dimensional parameters. Our senior quartz processing engineers will evaluate thermal suitability, dimensional feasibility, and issue an accurate factory quotation.