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About FGQuartz
About FGQuartz: High-Purity Fused Silica Manufacturer Since 2005
We are a quartz glass factory, not a trading desk. FGQuartz forms, machines, and anneals fused silica in Lianyungang, China, and makes everything from a standard tube to a one-off apparatus nobody has built before.
This page explains who we are, how the plant works, how we deal with customers, and what we will and will not recommend.
Quick answer
Who is FGQuartz? FGQuartz is a manufacturer of fused silica (quartz glass, SiO₂ ≥ 99.99%) based in Lianyungang, China. Founded in 2005, it melts and draws material, then machines, flame-works, polishes, and anneals parts in a single 15,000 m² plant that runs under an ISO 9001 quality system. It sells seven standard product lines and builds custom parts from a drawing, a sketch, a sample, or a description, for more than 500 customers in over 40 countries.
Key takeaways
- Manufacturer, not an intermediary: the people who answer your technical questions work next to the furnaces and machines.
- Standard catalogue parts and made-to-order parts come from the same plant and the same material system.
- No minimum order, with a quotation typically within 24 business hours.
- We tell customers when quartz is the wrong material, such as with HF, hot concentrated phosphoric acid, or hot strong alkalis.
Written by the FGQuartz Engineering Team · Updated October 2026
On this page: Company facts · Who we are · How we work · Capabilities · Our customers · Industries · The plant · What we advise against · FAQ · Contact
FGQuartz at a glance: what are the key company facts?
Company facts
The details people most often ask before they contact a quartz glass supplier, in one place.
| Item | Detail |
|---|---|
| Company | FGQuartz |
| What it does | Manufactures fused silica (quartz glass) products and custom parts |
| Founded | 2005 |
| Location | Lianyungang, China |
| Facility | 15,000 m² integrated plant |
| Quality system | ISO 9001 |
| Material | Fused silica, SiO₂ ≥ 99.99%, including JGS1 / JGS2 / JGS3 optical grades and opaque fused silica |
| Standard products | Tubes, rods, plates, wafer boats, crucibles, tanks, inline heaters |
| Made to order | From drawings (DXF, STEP, IGES, PDF), sketches, samples, or a description of the job |
| Markets | Semiconductor, solar photovoltaic, optics and photonics, fiber optic, laboratory, high-temperature industrial |
| Customers | 500+ customers in 40+ countries |
| Minimum order | None; single prototypes are welcome |
| Quotation | Typically within 24 business hours |
| Typical lead time | 7–14 days for simpler parts; 3–6 weeks for complex assemblies |
| Contact | info@fgquartz.com |
Who is FGQuartz, and what has the company stayed focused on?
Who we are
FGQuartz started making quartz glass in 2005 and has stayed focused on one family of material: fused silica. Two decades of working with it shows in small things, such as which wall thickness a furnace tube really needs, why a flange is fused rather than glued to a design, or when a customer should be steered away from quartz altogether.
The plant in Lianyungang covers the whole chain of the work. Material is melted and drawn into tube and rod, then cut, drilled, slotted, and ground with diamond tooling, formed and welded in an oxy-hydrogen flame, polished, and annealed. Because those steps sit under one roof and one ISO 9001 quality system, a drawing is not handed from workshop to workshop, and one team answers for the finished part.
Our customers are process engineers, laboratory managers, equipment makers, researchers, and the buyers who support them. Some order a standard crucible. Others bring a worn part, a sketch on paper, or a problem and ask what can be built. Both are normal here.
Production at the Lianyungang plant.
How does FGQuartz work with customers?
How we work
Six habits that shape every project, large or small.
Be the manufacturer
Talk to the people who run the furnaces and machines. Technical questions are answered by the team that will make the part, which keeps the answers practical.
Start from the job, not the catalogue
The first question is what the part must do: temperature, chemistry, light, pressure, space. Shape and grade follow from that.
Say no when quartz is wrong
HF, hot concentrated phosphoric acid, and hot strong alkalis attack fused silica. We would rather tell you before you pay for a part that will not last.
Prototype first
No minimum order means a design can be tested with one piece, then repeated or scaled once it works.
Keep it in one plant
Hot work and cold work in one place reduce hand-offs and tolerance stack-up across vendors.
Answer quickly
A first response with engineering feedback, typically within 24 business hours, so projects do not stall waiting for a price.
What can the FGQuartz plant actually do?
Capabilities
Six processes cover almost every quartz part we make. More detail: thermal processing and cold processing.
Who buys from FGQuartz?
Our customers
More than 500 customers in over 40 countries, from research groups ordering a single prototype to manufacturers placing production orders.
Process and equipment engineers
Furnace tubes, boats, injectors, liners, and fixtures to fit a specific tool or platform.
Laboratory and research teams
Crucibles, reaction vessels, flow cells, and one-off apparatus, often made from a single sketch.
OEMs and system builders
Repeat parts to print, with matched sets that share one material system.
Procurement and purchasing teams
Clear quotations, stated lead times, and one supplier for standard and custom items.
Which industries does FGQuartz serve?
Industries
Six markets, with the same product families configured differently for each. See also all applications.
What does the FGQuartz plant in Lianyungang look like?
The plant
A 15,000 m² facility where melting, machining, flame work, polishing, and annealing take place in one location. Orders leave with export packing and shipping support for customers abroad.
When does FGQuartz advise against quartz glass?
Honest advice
A good supplier knows where the material stops. Fused silica is excellent for heat up to 1200°C continuous, for clean processes, and for hot mineral acids. We advise against it when the process involves:
- hydrofluoric acid (HF)
- hot concentrated phosphoric acid
- hot strong alkalis such as KOH or NaOH
- continuous service well above 1200°C
- heavy mechanical impact, since quartz is hard but brittle
In those cases we will say so and, where we can, point you to the kind of material that does suit the job. For numbers, see the technical specifications and the quartz vs borosilicate comparison.
Frequently asked questions
FAQ
No. FGQuartz supports order quantities from single-piece R&D prototypes through high-volume OEM blanket orders.
FGQuartz is vertically integrated — melting, CNC diamond machining, oxy-hydrogen flame forming, annealing, and metrology are all performed in-house.
FGQuartz supplies customers in 40+ countries, with established export documentation and logistics support.
Yes. FGQuartz operates under an ISO 9001-certified quality management system covering material qualification through final inspection.
FGQuartz was founded in 2005 and operates a 15,000 m² manufacturing facility in Lianyungang, Jiangsu, China.
Talk to FGQuartz
Contact
Whether you need a standard quartz part, a copy of an old one, or something new, tell us about the job. A drawing helps, but a sketch, photo, sample, or plain description is enough to begin.
Email: info@fgquartz.com
Location: Lianyungang, China
Reply: typically within 24 business hours