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Q1: What is quartz glass?

Update Time:2026/6/30
A: Quartz glass, also universally known as fused silica or fused quartz, is a special amorphous inorganic glass material produced by melting high-purity silica raw materials at an ultra-high temperature above 2000 degrees Celsius. Its main chemical composition is silicon dioxide, with the content reaching no less than 99.95%. Different from traditional crystalline quartz, it has no fixed crystal structure, which endows it with a series of excellent comprehensive properties. It can stably transmit light in ultraviolet, visible light and infrared full spectral bands, and owns extremely low thermal expansion coefficient, outstanding high temperature resistance and strong chemical inertness. Thanks to these advantages, quartz glass has become an indispensable core material in high-end optical systems, semiconductor manufacturing, precision laboratory equipment, high-temperature industrial furnaces and many other high-tech fields. Our company provides standard and customized quartz glass parts covering tubes, plates, rods, windows and various machined components to meet diversified technical demands from global clients.
James Fu, Sales Director of FELIX OPTICAL GLASS, and a poster displaying contact information for an optical glass deep-processing factory.James Fu, Sales Director of FELIX OPTICAL GLASS, and a poster displaying contact information for an optical glass deep-processing factory. 2
Learn more from our FAQ
What is the minimum order quantity for custom precision optical glass components?

FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.

Can I get free glass samples for testing before bulk order?

Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.

What is the production lead time for custom optical glass components?

A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?

All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.

Do you offer one-stop custom optical glass processing services?

Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.

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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.

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