Reliable Quartz Materials
for Industrial Applications
Supplying fused silica, silica sand and quartz glass materials for investment casting, refractory, technical ceramics and high-temperature industries.
Consistent Quality
Controlled chemistry and specifications
Technical Support
Solutions for casting,refractory and high-temperature industries
Flexible Supply
Standard products and customized
requirements
Premium Raw Material
Standard products and customized
requirements
OUR PRODUCTS
High Purity Silica Materials&
Quartz Glass Components
We offer acomprehensive range of fused silica products and quartz glass components to meet the diverse needs of Fused Silica and Quartz Glass of industrial applications
Fused Silica
High purity fused silica sand&powder for Investment,refractory,ceramics and more.
Quartz Glass
High quality quartz glass components for optics,and high-tempreture applications.
APPLICATIONS
Engineered for
High-Performance Industries
Our quartz materials are widely used in demanding industrial applications, where purity,stability and consistency matter.
Investment Castings
Stable shell expansion and cleaner surface finish.
Refractories
Excellent thermal shock resistance for longer furnace life.
Ceramics
Low iron and controlled PSD for consistent firing.
Optics | High-Temperature
High purity quartz glass for UV and high-temperature applications.
Why Engineers Choose Fused Silica
🔥
Near-zero Thermal Expansion
Stable under rapid heating and cooling.
⚗️
High Chemical Purity
Low iron content for demanding ceramic and electronic applications.
📊
Controlled Particle Size
Consistent PSD helps improve production stability.
WHY POLIGHT QUARTZ
Your Trusted Quartz|Silica Material Partner
With access to Donghai’s quartz resources and a flexible supply chain, we help global customers source reliable materials with clear specifications and professional support.
Stable Raw Material
Located in China’s most important silica source area.
COA Every Batch
Chemistry, PSD, FeO3 and full documentation support.
Custom Specifications
Standard grades and customized specifications to fit your needs.
Technical Expertise
Quick response and technical communication throughout the process.
QUALITY
Qulity You Can Verify
We implement stric quality control from raw materials to final packagin to ensure every batch meets your requirements.
Sio2
Fe2O3
PSD
COA
3rd-Party
＞99.5%
＜50ppm
each bag
each batch
Testing report
FREQUENTLY ASKED QUESTIONS
Quick Answers to Common Question
What is fused silica？
Learn the key properties and advantages of fused silica.
How do you control fused silica quality consistency?
COA/PSD/XRD and other report according to your request.
Do you provide COA?
COA is provided each batch,and 3rd party is supported if needed.
Is your fused silica free from dust and fully amorphous?
Yes the classifier pulls out fine dust and XRD report provided accordingly.