Company Overview
Discover our technical heritage, production capabilities, and commitment to global precision engineering in high-purity fused quartz glass.
About Lianyungang Zelvo Quartz Products Co., Ltd.
Lianyungang Zelvo Quartz Products Co., Ltd. is located in Donghai County, Jiangsu Province—recognized globally as the "Crystal Capital of China" and the hub of premier quartz raw materials. We are an integrated manufacturing and exporting enterprise dedicated to the technical development, precision fabrication, and global distribution of experimental and industrial fused quartz glass products.
Our comprehensive production facility develops and manufactures high-quality optical quartz glass sheets, sapphire sheets, quartz tubes, quartz rods, quartz boats, quartz beakers, bell jars, and custom-engineered laboratory apparatus. With a profound focus on quartz laser finishing (precision drilling, grooving, profile cutting) along with traditional flame-fusion glass blowing, we deliver tight-tolerance components tailored directly to client drawings.
Core Manufacturing & Fabrication Capabilities
With an engineering team boasting over a decade of hands-on quartz thermal working and machining expertise, we execute demanding geometries with microscopic precision and structural integrity.
Laser Drilling & Grooving
High-precision laser processing creating clean-edge micro-holes, specialized slotting, and XRD sample cavities without micro-cracks.
Flame Working & Welding
Specialist flame welding for heavy-wall tube joins, custom flange connections, U-bends, and complex vacuum reaction apparatus.
Optical Polishing & Lapping
Double-sided precision optical lapping delivering scratch-dig standards, high parallelism, and superior UV-grade transmission windows.
Global Market Distribution
Our quartz components serve demanding technical customers spanning semiconductor fabrication, solar photovoltaic cell manufacturing, analytical laboratories, and aerospace research across over 30 countries.
Production Workshop & Quality Inspection
Every piece of fused quartz undergoes strict multi-stage quality control—from spectroscopic raw material verification to coordinate measuring (CMM) dimensional checks and polariscope stress analysis before custom export packaging.
CNC & Cold Machining Line 
Thermal Processing & Annealing 
Cleanroom Inspection Area Looking for Custom Quartz Components?
Send your dimensional drawings or specifications directly to our engineering team for instant technical evaluation and competitive factory pricing.