About FGQuartz | High-Purity Fused Silica Manufacturer Since 2005
Written by Fei X, Engineering Lead, FGQuartz · Reviewed by Fei X, Production/QA Manager, FGQuartz
Published: February 2022 · Last updated: September 2026
Quick Answer: FGQuartz is a vertically integrated quartz glass manufacturer founded in 2005 in Lianyungang, China, operating a 15,000 m² ISO 9001-certified facility that melts, machines, and thermally fabricates high-purity fused silica. We supply standard products (tubes, rods, plates, wafer boats, crucibles, tanks) and fully custom fabrication to 500+ customers across 40+ countries in semiconductor, solar, optical, fiber-optic, and laboratory industries.
Key Takeaways
- Founded 2005: 20+ years focused exclusively on fused silica processing, based in Lianyungang, China.
- Vertically Integrated: In-house melting, CNC diamond machining, oxy-hydrogen flame forming, and annealing under one 15,000 m² roof.
- ISO 9001 Certified: Standardized quality workflows for batch-to-batch consistency.
- Global Reach: 500+ customers across 40+ countries, with established export and logistics support.
- Full Scope: Standard catalogue products through fully custom fabrication, no minimum order quantity.
Founded in 2005 in Lianyungang, China, FGQuartz is a vertically integrated manufacturer of ultra-high-purity quartz glass and fused silica components. We specialize exclusively in the melting, thermal forming, precision CNC machining, and custom fabrication of advanced silica materials tailored for mission-critical applications in the semiconductor, solar photovoltaic, optical, fiber-optic, and scientific laboratory sectors.
From supplying standard quartz tubes, quartz rods, and quartz plates to engineering highly complex, custom-fabricated assemblies, we work with technology companies and research institutions worldwide, combining consistent material quality with flexible manufacturing capabilities.
Company Overview
Operating from a 15,000 m² manufacturing facility, FGQuartz integrates fusion furnaces, multi-axis CNC machining centers, and metrology laboratories under one roof. Our production infrastructure operates under an ISO 9001-certified quality management system to support batch-to-batch consistency.
We supply both standardized catalogue materials and fully custom-engineered components to OEM and R&D customers across more than 40 countries. Our focus is on delivering high-purity fused silica solutions that meet the thermal, chemical, and dimensional requirements of advanced manufacturing environments.
Whether your process requires precision quartz wafer boats, robust quartz crucibles, or highly intricate custom quartz assemblies, our engineering team supports customers from initial prototype development through to volume production.
Manufacturing Capabilities
FGQuartz operates an in-house fabrication ecosystem. Beyond supplying raw materials, our core strength lies in our ability to engineer, CNC machine, thermally form, and high-vacuum weld complex quartz structures directly from customer CAD drawings.
Melting & Forming
In-house melting and drawing of high-purity fused silica tubes, rods, and ingots, with controlled trace metal impurities and OH content for demanding applications.
CNC Diamond Machining
High-precision multi-axis CNC milling, drilling, and threading for complex geometries, tight-tolerance wafer boats, gas injectors, and specialized fixtures. See our cold processing capabilities.
Oxy-Hydrogen Flame Forming
Thermal processing for integrating flanges, creating multi-port manifolds, precision tube bending, and vacuum-tight welding. See our thermal processing capabilities.
Polishing & Surface Treatment
Mechanical and fire polishing to achieve low-particulate surfaces for semiconductor wet benches and high-transmission optical finishes.
Annealing & Stress Relief
Controlled thermal annealing profiles to reduce residual mechanical stress, supporting long-term structural and dimensional stability at extreme temperatures.
Inspection & Metrology
Dimensional metrology, optical defect inspection, and material traceability, with CoC (Certificate of Compliance) documentation available on request.
Key Strengths
20+ Years Focused Experience
Domain expertise in fused silica processing since 2005, built around the purity and thermal demands of technology industries.
ISO 9001 Quality System
Standardized production workflows and quality checkpoints supporting batch-to-batch consistency for OEM supply chains.
Engineering Collaboration
Direct engineer-to-engineer support for material selection, Design for Manufacturability (DFM), CAD drawing review, and reverse engineering from samples.
Flexible Order Quantities
Manufacturing that scales from single-piece R&D prototyping to high-volume blanket orders, with no minimum order quantity.
Complete Product Scope
A single fabrication partner: from standard raw tubes and rods to complex welded crucibles, boats, and multi-chamber tank assemblies. Browse our full product portfolio.
Global Customer Base
Working with 500+ technology companies and research institutions across 40+ countries, supported by export and logistics experience.
Industries We Serve
FGQuartz engineers high-purity quartz components used across multiple technology sectors. Below are the primary industries we support:
Semiconductor
Process tubes, precision wafer boats, gas injectors, furnace liners, and wet-bench components for front-end wafer processing.
Explore Semiconductor →
Solar Photovoltaic
Heavy-wall crucibles for crystal growth, diffusion furnace tubes, and wafer handling carriers for solar cell lines.
Explore Solar PV →
Optical & Laser Systems
Polished windows, plates, lens blanks, and precision optical components for photonic, spectroscopy, and high-power laser applications.
Explore Optical →
Fiber Optic
Ultra-pure substrate tubes, starting rods, and jacketing tubes for MCVD, VAD, and OVD preform manufacturing.
Explore Fiber Optic →
Laboratory & Analytical
Chemical-resistant labware, reaction vessels, cuvettes, and bespoke apparatus for research and analytical chemistry.
Explore Laboratory →
High-Temperature Industrial
Thermal-shock resistant furnace tubes, heating element supports, viewports, and thermal liners for industrial heating.
Explore High-Temperature →
Quality Control
Quality assurance is central to our manufacturing approach. From raw material qualification through final dimensional metrology, we maintain documented controls to support consistent product performance. Inspection reports, dimensional verification, and material certificates (CoC) can be provided to match your compliance requirements.
Our objective is to deliver quality that supports your process yield and long-term equipment performance across semiconductor, solar, optical, fiber-optic, and laboratory environments. Full material property data is available on our technical specifications page.
Frequently Asked Questions
We supply more than 500 clients across the Americas, Europe and Asia-Pacific.
Yes. Our processes follow ISO 9001 quality management, with documented inspection and full traceability from raw material to finished part.
Our factory is in Lianyungang, Jiangsu province, China, with melting, forming and machining capabilities on one site.
FGQuartz was founded in 2005 and has over two decades of quartz glass manufacturing experience.
Partner with FGQuartz
Whether you require standardized high-purity quartz components or highly complex custom fused silica assemblies, our engineering team is ready to help. Contact us today to discuss material selection, CAD drawings, rapid prototyping, or securing a reliable long-term supply chain.